402432 has 44 divisors (see below), whose sum is σ = 1080816. Its totient is φ = 133120.

The previous prime is 402419. The next prime is 402443. The reversal of 402432 is 234204.

It is a happy number.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3007 + ... + 3137.

It is an arithmetic number, because the mean of its divisors is an integer number (24564).

2⁴⁰²⁴³² 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 402432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540408).

402432 is an abundant number, since it is smaller than the sum of its proper divisors (678384).

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

402432 is a wasteful number, since it uses less digits than its factorization.

402432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 402432 is about 634.3752832512. The cubic root of 402432 is about 73.8296544335.

Adding to 402432 its reverse (234204), we get a palindrome (636636).

The spelling of 402432 in words is "four hundred two thousand, four hundred thirty-two".