71565430 has 16 divisors (see below), whose sum is σ = 130070304. Its totient is φ = 28347840.

The previous prime is 71565413. The next prime is 71565449. The reversal of 71565430 is 3456517.

It is a super-2 number, since 2×71565430² = 10243221542169800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71565392 and 71565401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33711 + ... + 35770.

It is an arithmetic number, because the mean of its divisors is an integer number (8129394).

Almost surely, 2^71565430 is an apocalyptic number.

71565430 is a deficient number, since it is larger than the sum of its proper divisors (58504874).

71565430 is a wasteful number, since it uses less digits than its factorization.

71565430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69591.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 71565430 is about 8459.6353349302. The cubic root of 71565430 is about 415.1780916575.

The spelling of 71565430 in words is "seventy-one million, five hundred sixty-five thousand, four hundred thirty".