6402456 has 32 divisors (see below), whose sum is σ = 17785200. Its totient is φ = 2134080.

The previous prime is 6402439. The next prime is 6402457. The reversal of 6402456 is 6542046.

It is a happy number.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14605 + ... + 15036.

Almost surely, 2^6402456 is an apocalyptic number.

It is an amenable number.

6402456 is an abundant number, since it is smaller than the sum of its proper divisors (11382744).

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

6402456 is a wasteful number, since it uses less digits than its factorization.

6402456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29656 (or 29646 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 6402456 is about 2530.3074911955. The cubic root of 6402456 is about 185.6872997701.

The spelling of 6402456 in words is "six million, four hundred two thousand, four hundred fifty-six".