809562402 has 48 divisors (see below), whose sum is σ = 1931117760. Its totient is φ = 243064800.

The previous prime is 809562379. The next prime is 809562421. The reversal of 809562402 is 204265908.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2827 + ... + 40337.

It is an arithmetic number, because the mean of its divisors is an integer number (40231620).

Almost surely, 2^809562402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 809562402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965558880).

809562402 is an abundant number, since it is smaller than the sum of its proper divisors (1121555358).

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

809562402 is a wasteful number, since it uses less digits than its factorization.

809562402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37639 (or 37636 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 809562402 is about 28452.8100896906. The cubic root of 809562402 is about 932.0018550375.

The spelling of 809562402 in words is "eight hundred nine million, five hundred sixty-two thousand, four hundred two".