13902944 has 48 divisors (see below), whose sum is σ = 30191616. Its totient is φ = 6249600.

The previous prime is 13902943. The next prime is 13902947. The reversal of 13902944 is 44920931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 13902944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13902943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44549 + ... + 44859.

It is an arithmetic number, because the mean of its divisors is an integer number (628992).

Almost surely, 2^13902944 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 13902944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15095808).

13902944 is an abundant number, since it is smaller than the sum of its proper divisors (16288672).

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

13902944 is a wasteful number, since it uses less digits than its factorization.

13902944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 13902944 is about 3728.6651767087. The cubic root of 13902944 is about 240.4559849603.

It can be divided in two parts, 1390 and 2944, that added together give a palindrome (4334).

The spelling of 13902944 in words is "thirteen million, nine hundred two thousand, nine hundred forty-four".