11156572 has 48 divisors (see below), whose sum is σ = 23914240. Its totient is φ = 4447872.

The previous prime is 11156549. The next prime is 11156599. The reversal of 11156572 is 27565111.

11156572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 11156572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35488 + ... + 35800.

Almost surely, 2^11156572 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 11156572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11957120).

11156572 is an abundant number, since it is smaller than the sum of its proper divisors (12757668).

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

11156572 is a wasteful number, since it uses less digits than its factorization.

11156572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 408 counting only the distinct ones).

The product of its digits is 2100, while the sum is 28.

The square root of 11156572 is about 3340.1455058126. The cubic root of 11156572 is about 223.4482327509.

The spelling of 11156572 in words is "eleven million, one hundred fifty-six thousand, five hundred seventy-two".