74988390 has 16 divisors (see below), whose sum is σ = 179972208. Its totient is φ = 19996896.

The previous prime is 74988379. The next prime is 74988409. The reversal of 74988390 is 9388947.

It is a congruent number.

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, 1249777 + ... + 1249836.

It is an arithmetic number, because the mean of its divisors is an integer number (11248263).

Almost surely, 2^74988390 is an apocalyptic number.

74988390 is an abundant number, since it is smaller than the sum of its proper divisors (104983818).

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

74988390 is a wasteful number, since it uses less digits than its factorization.

74988390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499623.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 74988390 is about 8659.5837082391. The cubic root of 74988390 is about 421.6945709652.

The spelling of 74988390 in words is "seventy-four million, nine hundred eighty-eight thousand, three hundred ninety".