71715474 has 24 divisors (see below), whose sum is σ = 155598300. Its totient is φ = 23872128.

The previous prime is 71715473. The next prime is 71715491. The reversal of 71715474 is 47451717.

It can be written as a sum of positive squares in 2 ways, for example, as 50509449 + 21206025 = 7107^2 + 4605^2 .

It is a super-2 number, since 2×71715474² = 10286218422089352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71715473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13102 + ... + 17750.

Almost surely, 2^71715474 is an apocalyptic number.

71715474 is an abundant number, since it is smaller than the sum of its proper divisors (83882826).

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

71715474 is a wasteful number, since it uses less digits than its factorization.

71715474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514 (or 5511 counting only the distinct ones).

The product of its digits is 27440, while the sum is 36.

The square root of 71715474 is about 8468.4989224773. The cubic root of 71715474 is about 415.4680430878.

The spelling of 71715474 in words is "seventy-one million, seven hundred fifteen thousand, four hundred seventy-four".