402003800 has 96 divisors (see below), whose sum is σ = 1054954800. Its totient is φ = 141120000.

The previous prime is 402003799. The next prime is 402003809. The reversal of 402003800 is 8300204.

402003800 = 3998² + 3999² + ... + 4022².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402003809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60650 + ... + 66950.

Almost surely, 2^402003800 is an apocalyptic number.

402003800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402003800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527477400).

402003800 is an abundant number, since it is smaller than the sum of its proper divisors (652951000).

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

402003800 is a wasteful number, since it uses less digits than its factorization.

402003800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357 (or 6348 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 402003800 is about 20050.0324189264. The cubic root of 402003800 is about 738.0345946773.

The spelling of 402003800 in words is "four hundred two million, three thousand, eight hundred".