13402788 has 48 divisors (see below), whose sum is σ = 36900864. Its totient is φ = 3705120.

The previous prime is 13402787. The next prime is 13402793. The reversal of 13402788 is 88720431.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13402787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31 + ... + 5177.

It is an arithmetic number, because the mean of its divisors is an integer number (768768).

Almost surely, 2^13402788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13402788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18450432).

13402788 is an abundant number, since it is smaller than the sum of its proper divisors (23498076).

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

13402788 is a wasteful number, since it uses less digits than its factorization.

13402788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5192 (or 5190 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 13402788 is about 3660.9818355190. The cubic root of 13402788 is about 237.5372454976.

The spelling of 13402788 in words is "thirteen million, four hundred two thousand, seven hundred eighty-eight".