13402844 has 24 divisors (see below), whose sum is σ = 28868448. Its totient is φ = 5302080.

The previous prime is 13402841. The next prime is 13402861. The reversal of 13402844 is 44820431.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402841) 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, 18047 + ... + 18774.

It is an arithmetic number, because the mean of its divisors is an integer number (1202852).

Almost surely, 2^13402844 is an apocalyptic number.

13402844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13402844 is an abundant number, since it is smaller than the sum of its proper divisors (15465604).

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

13402844 is a wasteful number, since it uses less digits than its factorization.

13402844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36845 (or 36843 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 13402844 is about 3660.9894837325. The cubic root of 13402844 is about 237.5375763260.

The spelling of 13402844 in words is "thirteen million, four hundred two thousand, eight hundred forty-four".