900170220 has 48 divisors (see below), whose sum is σ = 2653136640. Its totient is φ = 227411136.

The previous prime is 900170209. The next prime is 900170231. The reversal of 900170220 is 22071009.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (900170209) and next prime (900170231).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393672 + ... + 395951.

It is an arithmetic number, because the mean of its divisors is an integer number (55273680).

Almost surely, 2^900170220 is an apocalyptic number.

It is an amenable number.

900170220 is an abundant number, since it is smaller than the sum of its proper divisors (1752966420).

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

900170220 is a wasteful number, since it uses less digits than its factorization.

900170220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789654 (or 789652 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 900170220 is about 30002.8368658699. The cubic root of 900170220 is about 965.5502495105.

The spelling of 900170220 in words is "nine hundred million, one hundred seventy thousand, two hundred twenty".