74978904 has 128 divisors (see below), whose sum is σ = 251758080. Its totient is φ = 17971200.

The previous prime is 74978903. The next prime is 74978977. The reversal of 74978904 is 40987947.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74978903) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 22464 + ... + 25584.

It is an arithmetic number, because the mean of its divisors is an integer number (1966860).

Almost surely, 2^74978904 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 74978904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125879040).

74978904 is an abundant number, since it is smaller than the sum of its proper divisors (176779176).

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

74978904 is a wasteful number, since it uses less digits than its factorization.

74978904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161 (or 3157 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 74978904 is about 8659.0359740562. The cubic root of 74978904 is about 421.6767888197.

The spelling of 74978904 in words is "seventy-four million, nine hundred seventy-eight thousand, nine hundred four".