402456 has 32 divisors (see below), whose sum is σ = 1033200. Its totient is φ = 130560.

The previous prime is 402443. The next prime is 402487. The reversal of 402456 is 654204.

It is a happy number.

It is an Ulam number.

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, 780 + ... + 1188.

2⁴⁰²⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516600).

402456 is an abundant number, since it is smaller than the sum of its proper divisors (630744).

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

402456 is a wasteful number, since it uses less digits than its factorization.

402456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 402456 is about 634.3941992169. The cubic root of 402456 is about 73.8311220740.

It can be divided in two parts, 402 and 456, that added together give a palindrome (858).

The spelling of 402456 in words is "four hundred two thousand, four hundred fifty-six".