402000912 has 30 divisors (see below), whose sum is σ = 1125044622. Its totient is φ = 134000256.

The previous prime is 402000889. The next prime is 402000913. The reversal of 402000912 is 219000204.

It can be written as a sum of positive squares in only one way, i.e., 217149696 + 184851216 = 14736^2 + 13596^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (402000913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1395693 + ... + 1395980.

Almost surely, 2^402000912 is an apocalyptic number.

It is an amenable number.

402000912 is an abundant number, since it is smaller than the sum of its proper divisors (723043710).

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

402000912 is a wasteful number, since it uses less digits than its factorization.

402000912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791687 (or 2791678 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 402000912 is about 20049.9603989634. The cubic root of 402000912 is about 738.0328273233.

The spelling of 402000912 in words is "four hundred two million, nine hundred twelve", and thus it is an aban number.