13402388 has 6 divisors (see below), whose sum is σ = 23454186. Its totient is φ = 6701192.

The previous prime is 13402373. The next prime is 13402423. The reversal of 13402388 is 88320431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12759184 + 643204 = 3572^2 + 802^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13402388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1675295 + ... + 1675302.

It is an arithmetic number, because the mean of its divisors is an integer number (3909031).

Almost surely, 2^13402388 is an apocalyptic number.

It is an amenable number.

13402388 is a deficient number, since it is larger than the sum of its proper divisors (10051798).

13402388 is a wasteful number, since it uses less digits than its factorization.

13402388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350601 (or 3350599 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 13402388 is about 3660.9272049578. The cubic root of 13402388 is about 237.5348824111.

The spelling of 13402388 in words is "thirteen million, four hundred two thousand, three hundred eighty-eight".