13997088 has 144 divisors (see below), whose sum is σ = 46702656. Its totient is φ = 3893760.

The previous prime is 13997083. The next prime is 13997099. The reversal of 13997088 is 88079931.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (13997083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106783 + ... + 106913.

It is an arithmetic number, because the mean of its divisors is an integer number (324324).

Almost surely, 2^13997088 is an apocalyptic number.

13997088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13997088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23351328).

13997088 is an abundant number, since it is smaller than the sum of its proper divisors (32705568).

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

13997088 is a wasteful number, since it uses less digits than its factorization.

13997088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 13997088 is about 3741.2682341687. The cubic root of 13997088 is about 240.9975149391.

The spelling of 13997088 in words is "thirteen million, nine hundred ninety-seven thousand, eighty-eight".