74774440 has 32 divisors (see below), whose sum is σ = 181185480. Its totient is φ = 27608832.

The previous prime is 74774429. The next prime is 74774459. The reversal of 74774440 is 4447747.

It can be written as a sum of positive squares in 4 ways, for example, as 23020804 + 51753636 = 4798^2 + 7194^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74774440.

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, 71379 + ... + 72418.

Almost surely, 2^74774440 is an apocalyptic number.

It is an amenable number.

74774440 is an abundant number, since it is smaller than the sum of its proper divisors (106411040).

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

74774440 is a wasteful number, since it uses less digits than its factorization.

74774440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143821 (or 143817 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 37.

The square root of 74774440 is about 8647.2215190777. The cubic root of 74774440 is about 421.2931421854.

The spelling of 74774440 in words is "seventy-four million, seven hundred seventy-four thousand, four hundred forty".