13402988 has 24 divisors (see below), whose sum is σ = 24418800. Its totient is φ = 6429248.

The previous prime is 13402979. The next prime is 13402993. The reversal of 13402988 is 88920431.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 26078 + ... + 26586.

It is an arithmetic number, because the mean of its divisors is an integer number (1017450).

Almost surely, 2^13402988 is an apocalyptic number.

It is an amenable number.

13402988 is a deficient number, since it is larger than the sum of its proper divisors (11015812).

13402988 is a wasteful number, since it uses less digits than its factorization.

13402988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 13402988 is about 3661.0091504939. The cubic root of 13402988 is about 237.5384270232.

The spelling of 13402988 in words is "thirteen million, four hundred two thousand, nine hundred eighty-eight".