801210920 has 16 divisors (see below), whose sum is σ = 1802724660. Its totient is φ = 320484352.

The previous prime is 801210877. The next prime is 801210923. The reversal of 801210920 is 29012108.

It can be written as a sum of positive squares in 2 ways, for example, as 780978916 + 20232004 = 27946^2 + 4498^2 .

It is not an unprimeable number, because it can be changed into a prime (801210923) 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, 10015097 + ... + 10015176.

Almost surely, 2^801210920 is an apocalyptic number.

It is an amenable number.

801210920 is an abundant number, since it is smaller than the sum of its proper divisors (1001513740).

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

801210920 is a wasteful number, since it uses less digits than its factorization.

801210920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20030284 (or 20030280 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 801210920 is about 28305.6693967834. The cubic root of 801210920 is about 928.7859133278.

The spelling of 801210920 in words is "eight hundred one million, two hundred ten thousand, nine hundred twenty".