74990288 has 30 divisors (see below), whose sum is σ = 150503574. Its totient is φ = 36195712.

The previous prime is 74990273. The next prime is 74990297. The reversal of 74990288 is 88209947.

It can be written as a sum of positive squares in 3 ways, for example, as 1236544 + 73753744 = 1112^2 + 8588^2 .

It is a super-3 number, since 3×74990288³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10670 + ... + 16242.

Almost surely, 2^74990288 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 74990288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75251787).

74990288 is an abundant number, since it is smaller than the sum of its proper divisors (75513286).

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

74990288 is a wasteful number, since it uses less digits than its factorization.

74990288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639 (or 5604 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 74990288 is about 8659.6932971093. The cubic root of 74990288 is about 421.6981287139.

The spelling of 74990288 in words is "seventy-four million, nine hundred ninety thousand, two hundred eighty-eight".