747730220 has 24 divisors (see below), whose sum is σ = 1579317264. Its totient is φ = 297361856.

The previous prime is 747730213. The next prime is 747730267. The reversal of 747730220 is 22037747.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104594 + ... + 111513.

It is an arithmetic number, because the mean of its divisors is an integer number (65804886).

Almost surely, 2^747730220 is an apocalyptic number.

It is an amenable number.

747730220 is an abundant number, since it is smaller than the sum of its proper divisors (831587044).

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

747730220 is a wasteful number, since it uses less digits than its factorization.

747730220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216289 (or 216287 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 747730220 is about 27344.6561506997. The cubic root of 747730220 is about 907.6428227024.

Adding to 747730220 its reverse (22037747), we get a palindrome (769767967).

The spelling of 747730220 in words is "seven hundred forty-seven million, seven hundred thirty thousand, two hundred twenty".