74740272 has 20 divisors (see below), whose sum is σ = 193079160. Its totient is φ = 24913408.

The previous prime is 74740261. The next prime is 74740273. The reversal of 74740272 is 27204747.

It is a super-2 number, since 2×74740272² = 11172216517267968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74740273) 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 3 ways as a sum of consecutive naturals, for example, 778497 + ... + 778592.

It is an arithmetic number, because the mean of its divisors is an integer number (9653958).

Almost surely, 2^74740272 is an apocalyptic number.

It is an amenable number.

74740272 is an abundant number, since it is smaller than the sum of its proper divisors (118338888).

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

74740272 is a wasteful number, since it uses less digits than its factorization.

74740272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557100 (or 1557094 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 33.

The square root of 74740272 is about 8645.2456298245. The cubic root of 74740272 is about 421.2289627805.

The spelling of 74740272 in words is "seventy-four million, seven hundred forty thousand, two hundred seventy-two".