810428032 has 16 divisors (see below), whose sum is σ = 1614524850. Its totient is φ = 405213952.

The previous prime is 810427991. The next prime is 810428039. The reversal of 810428032 is 230824018.

It can be written as a sum of positive squares in only one way, i.e., 645973056 + 164454976 = 25416^2 + 12824^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (810428039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3165607 + ... + 3165862.

Almost surely, 2^810428032 is an apocalyptic number.

It is an amenable number.

810428032 is a deficient number, since it is larger than the sum of its proper divisors (804096818).

810428032 is an equidigital number, since it uses as much as digits as its factorization.

810428032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331483 (or 6331471 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 810428032 is about 28468.0177040833. The cubic root of 810428032 is about 932.3339197789. Note that the first 3 decimals are identical.

The spelling of 810428032 in words is "eight hundred ten million, four hundred twenty-eight thousand, thirty-two".