12402988 has 12 divisors (see below), whose sum is σ = 23374960. Its totient is φ = 5724432.

The previous prime is 12402977. The next prime is 12402997. The reversal of 12402988 is 88920421.

It is a super-2 number, since 2×12402988² = 307668222656288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119208 + ... + 119311.

Almost surely, 2^12402988 is an apocalyptic number.

It is an amenable number.

12402988 is a deficient number, since it is larger than the sum of its proper divisors (10971972).

12402988 is a wasteful number, since it uses less digits than its factorization.

12402988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238536 (or 238534 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 12402988 is about 3521.7876142664. The cubic root of 12402988 is about 231.4774953361.

The spelling of 12402988 in words is "twelve million, four hundred two thousand, nine hundred eighty-eight".