74509280 has 48 divisors (see below), whose sum is σ = 176586480. Its totient is φ = 29709312.

The previous prime is 74509277. The next prime is 74509301. The reversal of 74509280 is 8290547.

It is a happy number.

It is a super-2 number, since 2×74509280² = 11103265612236800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74509280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72611 + ... + 73629.

It is an arithmetic number, because the mean of its divisors is an integer number (3678885).

Almost surely, 2^74509280 is an apocalyptic number.

It is an amenable number.

74509280 is an abundant number, since it is smaller than the sum of its proper divisors (102077200).

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

74509280 is a wasteful number, since it uses less digits than its factorization.

74509280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 74509280 is about 8631.8758100427. The cubic root of 74509280 is about 420.7945654144.

The spelling of 74509280 in words is "seventy-four million, five hundred nine thousand, two hundred eighty".