78146752 has 28 divisors (see below), whose sum is σ = 155402280. Its totient is φ = 38990336.

The previous prime is 78146743. The next prime is 78146767. The reversal of 78146752 is 25764187.

It is a super-2 number, since 2×78146752² = 12213829696299008, 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, 38499 + ... + 40477.

Almost surely, 2^78146752 is an apocalyptic number.

It is an amenable number.

78146752 is a deficient number, since it is larger than the sum of its proper divisors (77255528).

78146752 is a wasteful number, since it uses less digits than its factorization.

78146752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608 (or 2598 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 78146752 is about 8840.0651581309. The cubic root of 78146752 is about 427.5336580775.

The spelling of 78146752 in words is "seventy-eight million, one hundred forty-six thousand, seven hundred fifty-two".