13319988 has 96 divisors (see below), whose sum is σ = 36771840. Its totient is φ = 3709440.

The previous prime is 13319951. The next prime is 13319989. The reversal of 13319988 is 88991331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13319989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117820 + ... + 117932.

It is an arithmetic number, because the mean of its divisors is an integer number (383040).

Almost surely, 2^13319988 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 13319988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18385920).

13319988 is an abundant number, since it is smaller than the sum of its proper divisors (23451852).

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

13319988 is a wasteful number, since it uses less digits than its factorization.

13319988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 195 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The square root of 13319988 is about 3649.6558741887. The cubic root of 13319988 is about 237.0470806785.

The spelling of 13319988 in words is "thirteen million, three hundred nineteen thousand, nine hundred eighty-eight".