74780448 has 24 divisors (see below), whose sum is σ = 196298928. Its totient is φ = 24926784.

The previous prime is 74780437. The next prime is 74780477. The reversal of 74780448 is 84408747.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389386 + ... + 389577.

It is an arithmetic number, because the mean of its divisors is an integer number (8179122).

Almost surely, 2^74780448 is an apocalyptic number.

It is an amenable number.

74780448 is an abundant number, since it is smaller than the sum of its proper divisors (121518480).

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

74780448 is a wasteful number, since it uses less digits than its factorization.

74780448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778976 (or 778968 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 74780448 is about 8647.5689069241. The cubic root of 74780448 is about 421.3044252808.

The spelling of 74780448 in words is "seventy-four million, seven hundred eighty thousand, four hundred forty-eight".