402235712 has 14 divisors (see below), whose sum is σ = 798186618. Its totient is φ = 201117824.

The previous prime is 402235711. The next prime is 402235721. The reversal of 402235712 is 217532204.

It can be written as a sum of positive squares in only one way, i.e., 394260736 + 7974976 = 19856^2 + 2824^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402235711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3142403 + ... + 3142530.

Almost surely, 2^402235712 is an apocalyptic number.

It is an amenable number.

402235712 is a deficient number, since it is larger than the sum of its proper divisors (395950906).

402235712 is an equidigital number, since it uses as much as digits as its factorization.

402235712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6284945 (or 6284935 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 402235712 is about 20055.8149173750. The cubic root of 402235712 is about 738.1764890044.

Adding to 402235712 its reverse (217532204), we get a palindrome (619767916).

The spelling of 402235712 in words is "four hundred two million, two hundred thirty-five thousand, seven hundred twelve".