74173420 has 24 divisors (see below), whose sum is σ = 155935584. Its totient is φ = 29636736.

The previous prime is 74173399. The next prime is 74173423. The reversal of 74173420 is 2437147.

It is not an unprimeable number, because it can be changed into a prime (74173423) 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, 25984 + ... + 28696.

It is an arithmetic number, because the mean of its divisors is an integer number (6497316).

Almost surely, 2^74173420 is an apocalyptic number.

It is an amenable number.

74173420 is an abundant number, since it is smaller than the sum of its proper divisors (81762164).

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

74173420 is a wasteful number, since it uses less digits than its factorization.

74173420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4089 (or 4087 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 74173420 is about 8612.3992011518. The cubic root of 74173420 is about 420.1613514599.

The spelling of 74173420 in words is "seventy-four million, one hundred seventy-three thousand, four hundred twenty".