13402044 has 48 divisors (see below), whose sum is σ = 35875840. Its totient is φ = 4322160.

The previous prime is 13402043. The next prime is 13402063. The reversal of 13402044 is 44020431.

It is a super-2 number, since 2×13402044² = 359229566755872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402043) 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, 1347 + ... + 5349.

Almost surely, 2^13402044 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 13402044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17937920).

13402044 is an abundant number, since it is smaller than the sum of its proper divisors (22473796).

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

13402044 is a wasteful number, since it uses less digits than its factorization.

13402044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047 (or 4039 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 13402044 is about 3660.8802220231. The cubic root of 13402044 is about 237.5328501191.

Adding to 13402044 its reverse (44020431), we get a palindrome (57422475).

The spelling of 13402044 in words is "thirteen million, four hundred two thousand, forty-four".