74481920 has 36 divisors (see below), whose sum is σ = 178410540. Its totient is φ = 29792256.

The previous prime is 74481893. The next prime is 74481937. The reversal of 74481920 is 2918447.

It can be written as a sum of positive squares in 2 ways, for example, as 15745024 + 58736896 = 3968^2 + 7664^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27815 + ... + 30374.

Almost surely, 2^74481920 is an apocalyptic number.

It is an amenable number.

74481920 is an abundant number, since it is smaller than the sum of its proper divisors (103928620).

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

74481920 is an equidigital number, since it uses as much as digits as its factorization.

74481920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58210 (or 58196 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 74481920 is about 8630.2908409856. The cubic root of 74481920 is about 420.7430534918.

The spelling of 74481920 in words is "seventy-four million, four hundred eighty-one thousand, nine hundred twenty".