13402938 has 16 divisors (see below), whose sum is σ = 26865216. Its totient is φ = 4457760.

The previous prime is 13402937. The next prime is 13402957. The reversal of 13402938 is 83920431.

It is not an unprimeable number, because it can be changed into a prime (13402937) by changing a digit.

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, 798 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (1679076).

Almost surely, 2^13402938 is an apocalyptic number.

13402938 is an abundant number, since it is smaller than the sum of its proper divisors (13462278).

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

13402938 is a wasteful number, since it uses less digits than its factorization.

13402938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 13402938 is about 3661.0023217693. The cubic root of 13402938 is about 237.5381316429.

It can be divided in two parts, 1340 and 2938, that added together give a triangular number (4278 = T₉₂).

The spelling of 13402938 in words is "thirteen million, four hundred two thousand, nine hundred thirty-eight".