71919568 has 40 divisors (see below), whose sum is σ = 159725888. Its totient is φ = 30730752.

The previous prime is 71919563. The next prime is 71919577. The reversal of 71919568 is 86591917.

It is a happy number.

It is a super-2 number, since 2×71919568² = 10344848522613248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71919563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47755 + ... + 49237.

Almost surely, 2^71919568 is an apocalyptic number.

It is an amenable number.

71919568 is an abundant number, since it is smaller than the sum of its proper divisors (87806320).

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

71919568 is a wasteful number, since it uses less digits than its factorization.

71919568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931 (or 1925 counting only the distinct ones).

The product of its digits is 136080, while the sum is 46.

The square root of 71919568 is about 8480.5405488094. The cubic root of 71919568 is about 415.8617945731.

The spelling of 71919568 in words is "seventy-one million, nine hundred nineteen thousand, five hundred sixty-eight".