900442228 has 120 divisors (see below), whose sum is σ = 1969327080. Its totient is φ = 359573760.

The previous prime is 900442219. The next prime is 900442229. The reversal of 900442228 is 822244009.

It can be written as a sum of positive squares in 4 ways, for example, as 41835024 + 858607204 = 6468^2 + 29302^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 900442228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900442229) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14761318 + ... + 14761378.

It is an arithmetic number, because the mean of its divisors is an integer number (16411059).

Almost surely, 2^900442228 is an apocalyptic number.

900442228 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 900442228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984663540).

900442228 is an abundant number, since it is smaller than the sum of its proper divisors (1068884852).

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

900442228 is a wasteful number, since it uses less digits than its factorization.

900442228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 900442228 is about 30007.3695614927. The cubic root of 900442228 is about 965.6474944303.

The spelling of 900442228 in words is "nine hundred million, four hundred forty-two thousand, two hundred twenty-eight".