402333240 has 64 divisors (see below), whose sum is σ = 1248631200. Its totient is φ = 103588352.

The previous prime is 402333233. The next prime is 402333259. The reversal of 402333240 is 42333204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54327 + ... + 61286.

Almost surely, 2^402333240 is an apocalyptic number.

402333240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402333240 is an abundant number, since it is smaller than the sum of its proper divisors (846297960).

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

402333240 is a wasteful number, since it uses less digits than its factorization.

402333240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115656 (or 115652 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 402333240 is about 20058.2461845496. The cubic root of 402333240 is about 738.2361447873.

Adding to 402333240 its reverse (42333204), we get a palindrome (444666444).

The spelling of 402333240 in words is "four hundred two million, three hundred thirty-three thousand, two hundred forty".