78974028 has 168 divisors, whose sum is σ = 244587168. Its totient is φ = 21835008.

The previous prime is 78974003. The next prime is 78974033. The reversal of 78974028 is 82047987.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1081800 + ... + 1081872.

It is an arithmetic number, because the mean of its divisors is an integer number (1455876).

Almost surely, 2^78974028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78974028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122293584).

78974028 is an abundant number, since it is smaller than the sum of its proper divisors (165613140).

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

78974028 is a wasteful number, since it uses less digits than its factorization.

78974028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 78974028 is about 8886.7332580651. The cubic root of 78974028 is about 429.0370157312.

The spelling of 78974028 in words is "seventy-eight million, nine hundred seventy-four thousand, twenty-eight".