74940220 has 24 divisors (see below), whose sum is σ = 157659264. Its totient is φ = 29921856.

The previous prime is 74940211. The next prime is 74940221. The reversal of 74940220 is 2204947.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74940221) 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, 9054 + ... + 15226.

It is an arithmetic number, because the mean of its divisors is an integer number (6569136).

Almost surely, 2^74940220 is an apocalyptic number.

It is an amenable number.

74940220 is an abundant number, since it is smaller than the sum of its proper divisors (82719044).

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

74940220 is a wasteful number, since it uses less digits than its factorization.

74940220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6789 (or 6787 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 74940220 is about 8656.8019499120. The cubic root of 74940220 is about 421.6042575246.

The spelling of 74940220 in words is "seventy-four million, nine hundred forty thousand, two hundred twenty".