402207432 has 64 divisors (see below), whose sum is σ = 1113350400. Its totient is φ = 120056640.

The previous prime is 402207419. The next prime is 402207433. The reversal of 402207432 is 234702204.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (402207433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6319 + ... + 29057.

It is an arithmetic number, because the mean of its divisors is an integer number (17396100).

Almost surely, 2^402207432 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 402207432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556675200).

402207432 is an abundant number, since it is smaller than the sum of its proper divisors (711142968).

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

402207432 is a wasteful number, since it uses less digits than its factorization.

402207432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22826 (or 22822 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 402207432 is about 20055.1098725487. The cubic root of 402207432 is about 738.1591889324.

Adding to 402207432 its reverse (234702204), we get a palindrome (636909636).

The spelling of 402207432 in words is "four hundred two million, two hundred seven thousand, four hundred thirty-two".