13111072 has 24 divisors (see below), whose sum is σ = 27798876. Its totient is φ = 6051072.

The previous prime is 13111067. The next prime is 13111079. The reversal of 13111072 is 27011131.

It can be written as a sum of positive squares in 2 ways, for example, as 11048976 + 2062096 = 3324^2 + 1436^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (13111079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15343 + ... + 16174.

Almost surely, 2^13111072 is an apocalyptic number.

It is an amenable number.

13111072 is an abundant number, since it is smaller than the sum of its proper divisors (14687804).

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

13111072 is a wasteful number, since it uses less digits than its factorization.

13111072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31540 (or 31532 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 13111072 is about 3620.9214296916. The cubic root of 13111072 is about 235.8012307007.

The spelling of 13111072 in words is "thirteen million, one hundred eleven thousand, seventy-two".