13145988 has 24 divisors (see below), whose sum is σ = 31178560. Its totient is φ = 4309920.

The previous prime is 13145987. The next prime is 13145999. The reversal of 13145988 is 88954131.

It is a super-2 number, since 2×13145988² = 345634000992288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13145987) 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, 8248 + ... + 9711.

Almost surely, 2^13145988 is an apocalyptic number.

It is an amenable number.

13145988 is an abundant number, since it is smaller than the sum of its proper divisors (18032572).

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

13145988 is a wasteful number, since it uses less digits than its factorization.

13145988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18027 (or 18025 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 13145988 is about 3625.7396486786. The cubic root of 13145988 is about 236.0103653400.

The spelling of 13145988 in words is "thirteen million, one hundred forty-five thousand, nine hundred eighty-eight".