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71429536 = 2523374361
BaseRepresentation
bin1000100000111…
…10110110100000
311222101222220101
410100132312200
5121241221121
611030552144
71525066243
oct420366640
9158358811
1071429536
1137358082
121bb08654
1311a4c3c9
1496b525a
15640e491
hex441eda0

71429536 has 96 divisors (see below), whose sum is σ = 156739968. Its totient is φ = 31933440.

The previous prime is 71429489. The next prime is 71429537. The reversal of 71429536 is 63592417.

It is a super-3 number, since 3×714295363 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 71429495 and 71429504.

It is not an unprimeable number, because it can be changed into a prime (71429537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1170946 + ... + 1171006.

It is an arithmetic number, because the mean of its divisors is an integer number (1632708).

Almost surely, 271429536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71429536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78369984).

71429536 is an abundant number, since it is smaller than the sum of its proper divisors (85310432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71429536 is a wasteful number, since it uses less digits than its factorization.

71429536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 166 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 71429536 is about 8451.5996119078. The cubic root of 71429536 is about 414.9151343376.

The spelling of 71429536 in words is "seventy-one million, four hundred twenty-nine thousand, five hundred thirty-six".

Divisors: 1 2 4 8 16 23 32 37 43 46 61 74 86 92 122 148 172 184 244 296 344 368 488 592 688 736 851 976 989 1184 1376 1403 1591 1702 1952 1978 2257 2623 2806 3182 3404 3956 4514 5246 5612 6364 6808 7912 9028 10492 11224 12728 13616 15824 18056 20984 22448 25456 27232 31648 36112 36593 41968 44896 50912 51911 60329 72224 73186 83936 97051 103822 120658 146372 194102 207644 241316 292744 388204 415288 482632 585488 776408 830576 965264 1170976 1552816 1661152 1930528 2232173 3105632 4464346 8928692 17857384 35714768 71429536