74575220 has 18 divisors (see below), whose sum is σ = 156689106. Its totient is φ = 29814640.

The previous prime is 74575219. The next prime is 74575253. The reversal of 74575220 is 2257547.

It can be written as a sum of positive squares in only one way, i.e., 59660176 + 14915044 = 7724^2 + 3862^2 .

It is a super-2 number, since 2×74575220² = 11122926876096800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37655 + ... + 39585.

Almost surely, 2^74575220 is an apocalyptic number.

It is an amenable number.

74575220 is an abundant number, since it is smaller than the sum of its proper divisors (82113886).

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

74575220 is an equidigital number, since it uses as much as digits as its factorization.

74575220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871 (or 1938 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 74575220 is about 8635.6945291042. The cubic root of 74575220 is about 420.9186618684.

The spelling of 74575220 in words is "seventy-four million, five hundred seventy-five thousand, two hundred twenty".