74238870 has 16 divisors (see below), whose sum is σ = 178173360. Its totient is φ = 19797024.

The previous prime is 74238821. The next prime is 74238877. The reversal of 74238870 is 7883247.

It is a super-2 number, since 2×74238870² = 11022819637753800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74238877) 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, 1237285 + ... + 1237344.

It is an arithmetic number, because the mean of its divisors is an integer number (11135835).

Almost surely, 2^74238870 is an apocalyptic number.

74238870 is an abundant number, since it is smaller than the sum of its proper divisors (103934490).

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

74238870 is a wasteful number, since it uses less digits than its factorization.

74238870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474639.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 74238870 is about 8616.1981174994. The cubic root of 74238870 is about 420.2848974056.

The spelling of 74238870 in words is "seventy-four million, two hundred thirty-eight thousand, eight hundred seventy".