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71425488 = 24323312087
BaseRepresentation
bin1000100000111…
…01110111010000
311222101210100110
410100131313100
5121241103423
611030521320
71525051401
oct420356720
9158353313
1071425488
1137355032
121bb06240
1311a4a604
1496b39a8
15640d193
hex441ddd0

71425488 has 80 divisors (see below), whose sum is σ = 198844416. Its totient is φ = 22028160.

The previous prime is 71425469. The next prime is 71425493. The reversal of 71425488 is 88452417.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33181 + ... + 35267.

Almost surely, 271425488 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 71425488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99422208).

71425488 is an abundant number, since it is smaller than the sum of its proper divisors (127418928).

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

71425488 is a wasteful number, since it uses less digits than its factorization.

71425488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152 (or 2146 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 71425488 is about 8451.3601272221. The cubic root of 71425488 is about 414.9072962719.

The spelling of 71425488 in words is "seventy-one million, four hundred twenty-five thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 23 24 31 46 48 62 69 92 93 124 138 184 186 248 276 368 372 496 552 713 744 1104 1426 1488 2087 2139 2852 4174 4278 5704 6261 8348 8556 11408 12522 16696 17112 25044 33392 34224 48001 50088 64697 96002 100176 129394 144003 192004 194091 258788 288006 384008 388182 517576 576012 768016 776364 1035152 1152024 1488031 1552728 2304048 2976062 3105456 4464093 5952124 8928186 11904248 17856372 23808496 35712744 71425488