78416528 has 20 divisors (see below), whose sum is σ = 152238768. Its totient is φ = 39129120.

The previous prime is 78416489. The next prime is 78416549. The reversal of 78416528 is 82561487.

It is a super-2 number, since 2×78416528² = 12298303727149568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3683 + ... + 13053.

Almost surely, 2^78416528 is an apocalyptic number.

It is an amenable number.

78416528 is a deficient number, since it is larger than the sum of its proper divisors (73822240).

78416528 is a wasteful number, since it uses less digits than its factorization.

78416528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9902 (or 9896 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 78416528 is about 8855.3107229504. The cubic root of 78416528 is about 428.0250662234.

The spelling of 78416528 in words is "seventy-eight million, four hundred sixteen thousand, five hundred twenty-eight".