74744940 has 48 divisors (see below), whose sum is σ = 218389248. Its totient is φ = 19065024.

The previous prime is 74744939. The next prime is 74744941. The reversal of 74744940 is 4944747.

It is an interprime number because it is at equal distance from previous prime (74744939) and next prime (74744941).

It is not an unprimeable number, because it can be changed into a prime (74744941) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25702 + ... + 28461.

It is an arithmetic number, because the mean of its divisors is an integer number (4549776).

Almost surely, 2^74744940 is an apocalyptic number.

It is an amenable number.

74744940 is an abundant number, since it is smaller than the sum of its proper divisors (143644308).

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

74744940 is a wasteful number, since it uses less digits than its factorization.

74744940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54198 (or 54196 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 74744940 is about 8645.5156005874. The cubic root of 74744940 is about 421.2377320638.

The spelling of 74744940 in words is "seventy-four million, seven hundred forty-four thousand, nine hundred forty".