909252228 has 12 divisors (see below), whose sum is σ = 2121588560. Its totient is φ = 303084072.

The previous prime is 909252221. The next prime is 909252229. The reversal of 909252228 is 822252909.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×909252228² = 1653479228245927968, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 37885498 + ... + 37885521.

Almost surely, 2^909252228 is an apocalyptic number.

It is an amenable number.

909252228 is an abundant number, since it is smaller than the sum of its proper divisors (1212336332).

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

909252228 is a wasteful number, since it uses less digits than its factorization.

909252228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75771026 (or 75771024 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 909252228 is about 30153.8095105743. The cubic root of 909252228 is about 968.7866033592.

The spelling of 909252228 in words is "nine hundred nine million, two hundred fifty-two thousand, two hundred twenty-eight".