13488981 has 16 divisors (see below), whose sum is σ = 19757568. Its totient is φ = 8118000.

The previous prime is 13488961. The next prime is 13488997. The reversal of 13488981 is 18988431.

It is not a de Polignac number, because 13488981 - 2⁵ = 13488949 is a prime.

It is a super-2 number, since 2×13488981² = 363905216836722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13488901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3630 + ... + 6336.

It is an arithmetic number, because the mean of its divisors is an integer number (1234848).

Almost surely, 2^13488981 is an apocalyptic number.

13488981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13488981 is a deficient number, since it is larger than the sum of its proper divisors (6268587).

13488981 is a wasteful number, since it uses less digits than its factorization.

13488981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872.

The product of its digits is 55296, while the sum is 42.

The square root of 13488981 is about 3672.7348120985. The cubic root of 13488981 is about 238.0453565606.

The spelling of 13488981 in words is "thirteen million, four hundred eighty-eight thousand, nine hundred eighty-one".