402323404 has 24 divisors (see below), whose sum is σ = 846997760. Its totient is φ = 163349136.

The previous prime is 402323359. The next prime is 402323473. The reversal of 402323404 is 404323204.

It is a super-2 number, since 2×402323404² = 323728242812294432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377592 + ... + 378655.

Almost surely, 2^402323404 is an apocalyptic number.

It is an amenable number.

402323404 is an abundant number, since it is smaller than the sum of its proper divisors (444674356).

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

402323404 is a wasteful number, since it uses less digits than its factorization.

402323404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756277 (or 756275 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 402323404 is about 20058.0009971084. Note that the first 3 decimals coincide. The cubic root of 402323404 is about 738.2301287545.

Adding to 402323404 its reverse (404323204), we get a palindrome (806646608).

The spelling of 402323404 in words is "four hundred two million, three hundred twenty-three thousand, four hundred four".