900992020 has 24 divisors (see below), whose sum is σ = 1893511368. Its totient is φ = 360124800.

The previous prime is 900991963. The next prime is 900992033. The reversal of 900992020 is 20299009.

It can be written as a sum of positive squares in 4 ways, for example, as 104284944 + 796707076 = 10212^2 + 28226^2 .

It is a congruent number.

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, 11310 + ... + 43930.

It is an arithmetic number, because the mean of its divisors is an integer number (78896307).

Almost surely, 2^900992020 is an apocalyptic number.

It is an amenable number.

900992020 is an abundant number, since it is smaller than the sum of its proper divisors (992519348).

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

900992020 is a wasteful number, since it uses less digits than its factorization.

900992020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34011 (or 34009 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 900992020 is about 30016.5291131403. The cubic root of 900992020 is about 965.8439894539.

The spelling of 900992020 in words is "nine hundred million, nine hundred ninety-two thousand, twenty".