402033144 has 32 divisors (see below), whose sum is σ = 1028459520. Its totient is φ = 130894176.

The previous prime is 402033053. The next prime is 402033161. The reversal of 402033144 is 441330204.

It is a self number, because there is not a number n which added to its sum of digits gives 402033144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193752 + ... + 195815.

It is an arithmetic number, because the mean of its divisors is an integer number (32139360).

Almost surely, 2^402033144 is an apocalyptic number.

It is an amenable number.

402033144 is an abundant number, since it is smaller than the sum of its proper divisors (626426376).

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

402033144 is a wasteful number, since it uses less digits than its factorization.

402033144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389619 (or 389615 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 402033144 is about 20050.7641749635. The cubic root of 402033144 is about 738.0525516885.

Adding to 402033144 its reverse (441330204), we get a palindrome (843363348).

The spelling of 402033144 in words is "four hundred two million, thirty-three thousand, one hundred forty-four".