402320232 has 192 divisors, whose sum is σ = 1245404160. Its totient is φ = 116582400.

The previous prime is 402320227. The next prime is 402320267. The reversal of 402320232 is 232023204.

402320232 is a `hidden beast` number, since 402 + 32 + 0 + 232 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 872482 + ... + 872942.

It is an arithmetic number, because the mean of its divisors is an integer number (6486480).

Almost surely, 2^402320232 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 402320232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622702080).

402320232 is an abundant number, since it is smaller than the sum of its proper divisors (843083928).

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

402320232 is a wasteful number, since it uses less digits than its factorization.

402320232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 537 counting only the distinct ones).

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

The square root of 402320232 is about 20057.9219262615. The cubic root of 402320232 is about 738.2281886303.

Adding to 402320232 its reverse (232023204), we get a palindrome (634343436).

The spelling of 402320232 in words is "four hundred two million, three hundred twenty thousand, two hundred thirty-two".