402451452 has 36 divisors (see below), whose sum is σ = 1095563560. Its totient is φ = 123831072.

The previous prime is 402451433. The next prime is 402451477. The reversal of 402451452 is 254154204.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429502 + ... + 430437.

Almost surely, 2^402451452 is an apocalyptic number.

It is an amenable number.

402451452 is an abundant number, since it is smaller than the sum of its proper divisors (693112108).

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

402451452 is a wasteful number, since it uses less digits than its factorization.

402451452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859962 (or 859957 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 402451452 is about 20061.1926863783. The cubic root of 402451452 is about 738.3084396057.

The spelling of 402451452 in words is "four hundred two million, four hundred fifty-one thousand, four hundred fifty-two".