74530220 has 12 divisors (see below), whose sum is σ = 156513504. Its totient is φ = 29812080.

The previous prime is 74530219. The next prime is 74530237. The reversal of 74530220 is 2203547.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863236 + ... + 1863275.

It is an arithmetic number, because the mean of its divisors is an integer number (13042792).

Almost surely, 2^74530220 is an apocalyptic number.

It is an amenable number.

74530220 is an abundant number, since it is smaller than the sum of its proper divisors (81983284).

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

74530220 is a wasteful number, since it uses less digits than its factorization.

74530220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726520 (or 3726518 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 74530220 is about 8633.0886709219. The cubic root of 74530220 is about 420.8339815912.

Adding to 74530220 its reverse (2203547), we get a palindrome (76733767).

The spelling of 74530220 in words is "seventy-four million, five hundred thirty thousand, two hundred twenty".