74238020 has 24 divisors (see below), whose sum is σ = 162679104. Its totient is φ = 28403936.

The previous prime is 74237987. The next prime is 74238023. The reversal of 74238020 is 2083247.

It is a super-2 number, since 2×74238020² = 11022567227040800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74238023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80234 + ... + 81153.

It is an arithmetic number, because the mean of its divisors is an integer number (6778296).

Almost surely, 2^74238020 is an apocalyptic number.

It is an amenable number.

74238020 is an abundant number, since it is smaller than the sum of its proper divisors (88441084).

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

74238020 is a wasteful number, since it uses less digits than its factorization.

74238020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161419 (or 161417 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 74238020 is about 8616.1487916586. The cubic root of 74238020 is about 420.2832933783.

The spelling of 74238020 in words is "seventy-four million, two hundred thirty-eight thousand, twenty".