78856830 has 48 divisors (see below), whose sum is σ = 220802400. Its totient is φ = 19410624.

The previous prime is 78856823. The next prime is 78856831. The reversal of 78856830 is 3865887.

78856830 is a `hidden beast` number, since 7 + 88 + 568 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78856831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32530 + ... + 34869.

It is an arithmetic number, because the mean of its divisors is an integer number (4600050).

Almost surely, 2^78856830 is an apocalyptic number.

78856830 is an abundant number, since it is smaller than the sum of its proper divisors (141945570).

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

78856830 is a wasteful number, since it uses less digits than its factorization.

78856830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67425 (or 67422 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 78856830 is about 8880.1368232702. The cubic root of 78856830 is about 428.8246793676.

The spelling of 78856830 in words is "seventy-eight million, eight hundred fifty-six thousand, eight hundred thirty".