909252220 has 48 divisors (see below), whose sum is σ = 2012724000. Its totient is φ = 344079360.

The previous prime is 909252209. The next prime is 909252221. The reversal of 909252220 is 22252909.

It is a happy number.

909252220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (909252221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397480 + ... + 399760.

It is an arithmetic number, because the mean of its divisors is an integer number (41931750).

Almost surely, 2^909252220 is an apocalyptic number.

It is an amenable number.

909252220 is an abundant number, since it is smaller than the sum of its proper divisors (1103471780).

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

909252220 is a wasteful number, since it uses less digits than its factorization.

909252220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358 (or 3356 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 909252220 is about 30153.8093779211. The cubic root of 909252220 is about 968.7866005180.

The spelling of 909252220 in words is "nine hundred nine million, two hundred fifty-two thousand, two hundred twenty".