402023232 has 168 divisors, whose sum is σ = 1265630184. Its totient is φ = 121245696.

The previous prime is 402023213. The next prime is 402023239. The reversal of 402023232 is 232320204.

402023232 is a `hidden beast` number, since 402 + 0 + 232 + 32 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1382976 + 400640256 = 1176^2 + 20016^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402023239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396358 + ... + 397370.

It is an arithmetic number, because the mean of its divisors is an integer number (7533513).

Almost surely, 2^402023232 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 402023232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632815092).

402023232 is an abundant number, since it is smaller than the sum of its proper divisors (863606952).

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

402023232 is a wasteful number, since it uses less digits than its factorization.

402023232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097 (or 1084 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 402023232 is about 20050.5170008157. The cubic root of 402023232 is about 738.0464861546.

Adding to 402023232 its reverse (232320204), we get a palindrome (634343436).

It can be divided in two parts, 40202 and 3232, that added together give a palindrome (43434).

The spelling of 402023232 in words is "four hundred two million, twenty-three thousand, two hundred thirty-two".