74989400 has 48 divisors (see below), whose sum is σ = 175275240. Its totient is φ = 29836800.

The previous prime is 74989391. The next prime is 74989423. The reversal of 74989400 is 498947.

It is a super-2 number, since 2×74989400² = 11246820224720000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41312 + ... + 43088.

Almost surely, 2^74989400 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 74989400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87637620).

74989400 is an abundant number, since it is smaller than the sum of its proper divisors (100285840).

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

74989400 is a wasteful number, since it uses less digits than its factorization.

74989400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 74989400 is about 8659.6420249338. The cubic root of 74989400 is about 421.6964641898.

The spelling of 74989400 in words is "seventy-four million, nine hundred eighty-nine thousand, four hundred".