78306056 has 32 divisors (see below), whose sum is σ = 149040000. Its totient is φ = 38567616.

The previous prime is 78306043. The next prime is 78306071. The reversal of 78306056 is 65060387.

It is a happy number.

It is a super-2 number, since 2×78306056² = 12263676812550272, which contains 22 as substring.

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, 213185 + ... + 213551.

It is an arithmetic number, because the mean of its divisors is an integer number (4657500).

Almost surely, 2^78306056 is an apocalyptic number.

It is an amenable number.

78306056 is a deficient number, since it is larger than the sum of its proper divisors (70733944).

78306056 is a wasteful number, since it uses less digits than its factorization.

78306056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 78306056 is about 8849.0709116833. The cubic root of 78306056 is about 427.8239733824.

The spelling of 78306056 in words is "seventy-eight million, three hundred six thousand, fifty-six".