402423200 has 72 divisors (see below), whose sum is σ = 1006459020. Its totient is φ = 157030400.

The previous prime is 402423179. The next prime is 402423233. The reversal of 402423200 is 2324204.

It can be written as a sum of positive squares in 6 ways, for example, as 142181776 + 260241424 = 11924^2 + 16132^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26666 + ... + 38934.

Almost surely, 2^402423200 is an apocalyptic number.

402423200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402423200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503229510).

402423200 is an abundant number, since it is smaller than the sum of its proper divisors (604035820).

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

402423200 is a wasteful number, since it uses less digits than its factorization.

402423200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12330 (or 12317 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 402423200 is about 20060.4885284482. The cubic root of 402423200 is about 738.2911628401.

Adding to 402423200 its reverse (2324204), we get a palindrome (404747404).

The spelling of 402423200 in words is "four hundred two million, four hundred twenty-three thousand, two hundred".