74239240 has 16 divisors (see below), whose sum is σ = 167038380. Its totient is φ = 29695680.

The previous prime is 74239229. The next prime is 74239313. The reversal of 74239240 is 4293247.

It can be written as a sum of positive squares in 2 ways, for example, as 69122596 + 5116644 = 8314^2 + 2262^2 .

It is a super-2 number, since 2×74239240² = 11022929511555200, which contains 22 as substring.

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, 927951 + ... + 928030.

Almost surely, 2^74239240 is an apocalyptic number.

It is an amenable number.

74239240 is an abundant number, since it is smaller than the sum of its proper divisors (92799140).

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

74239240 is a wasteful number, since it uses less digits than its factorization.

74239240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855992 (or 1855988 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 74239240 is about 8616.2195886595. The cubic root of 74239240 is about 420.2855956254.

The spelling of 74239240 in words is "seventy-four million, two hundred thirty-nine thousand, two hundred forty".