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71313294 = 231323127313
BaseRepresentation
bin1000100000000…
…10011110001110
311222012002110010
410100002132032
5121224011134
611024254050
71524103323
oct420023616
9158162403
1071313294
1137288808
121ba71326
1311a0b520
149684b4a
1563d9ce9
hex440278e

71313294 has 64 divisors (see below), whose sum is σ = 162054144. Its totient is φ = 20756736.

The previous prime is 71313293. The next prime is 71313301. The reversal of 71313294 is 49231317.

It is a super-2 number, since 2×713132942 = 10171171802260872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71313293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227682 + ... + 227994.

It is an arithmetic number, because the mean of its divisors is an integer number (2532096).

Almost surely, 271313294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71313294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81027072).

71313294 is an abundant number, since it is smaller than the sum of its proper divisors (90740850).

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

71313294 is a wasteful number, since it uses less digits than its factorization.

71313294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481.

The product of its digits is 4536, while the sum is 30.

The square root of 71313294 is about 8444.7198887826. The cubic root of 71313294 is about 414.6899392043.

The spelling of 71313294 in words is "seventy-one million, three hundred thirteen thousand, two hundred ninety-four".

Divisors: 1 2 3 6 13 23 26 39 46 69 78 127 138 254 299 313 381 598 626 762 897 939 1651 1794 1878 2921 3302 4069 4953 5842 7199 8138 8763 9906 12207 14398 17526 21597 24414 37973 39751 43194 75946 79502 93587 113919 119253 187174 227838 238506 280761 516763 561522 914273 1033526 1550289 1828546 2742819 3100578 5485638 11885549 23771098 35656647 71313294