402044032 has 128 divisors (see below), whose sum is σ = 906837120. Its totient is φ = 176332800.

The previous prime is 402044021. The next prime is 402044039. The reversal of 402044032 is 230440204.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (402044039) 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, 4843863 + ... + 4843945.

It is an arithmetic number, because the mean of its divisors is an integer number (7084665).

Almost surely, 2^402044032 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 402044032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453418560).

402044032 is an abundant number, since it is smaller than the sum of its proper divisors (504793088).

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

402044032 is a wasteful number, since it uses less digits than its factorization.

402044032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 402044032 is about 20051.0356839740. The cubic root of 402044032 is about 738.0592143594.

Adding to 402044032 its reverse (230440204), we get a palindrome (632484236).

The spelling of 402044032 in words is "four hundred two million, forty-four thousand, thirty-two".