402800800 has 36 divisors (see below), whose sum is σ = 983339406. Its totient is φ = 161120000.

The previous prime is 402800791. The next prime is 402800803. The reversal of 402800800 is 8008204.

It can be written as a sum of positive squares in 3 ways, for example, as 368179344 + 34621456 = 19188^2 + 5884^2 .

It is not an unprimeable number, because it can be changed into a prime (402800803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250951 + ... + 252550.

Almost surely, 2^402800800 is an apocalyptic number.

402800800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402800800 is an abundant number, since it is smaller than the sum of its proper divisors (580538606).

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

402800800 is a wasteful number, since it uses less digits than its factorization.

402800800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503521 (or 503508 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 402800800 is about 20069.8978572388. The cubic root of 402800800 is about 738.5220073792.

The spelling of 402800800 in words is "four hundred two million, eight hundred thousand, eight hundred".