13318890 has 96 divisors (see below), whose sum is σ = 36049536. Its totient is φ = 3144960.

The previous prime is 13318889. The next prime is 13318897. The reversal of 13318890 is 9881331.

It is not an unprimeable number, because it can be changed into a prime (13318897) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 187555 + ... + 187625.

It is an arithmetic number, because the mean of its divisors is an integer number (375516).

Almost surely, 2^13318890 is an apocalyptic number.

13318890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13318890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18024768).

13318890 is an abundant number, since it is smaller than the sum of its proper divisors (22730646).

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

13318890 is a wasteful number, since it uses less digits than its factorization.

13318890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 13318890 is about 3649.5054459474. The cubic root of 13318890 is about 237.0405670379.

The spelling of 13318890 in words is "thirteen million, three hundred eighteen thousand, eight hundred ninety".