11611728 has 40 divisors (see below), whose sum is σ = 33331200. Its totient is φ = 3870432.

The previous prime is 11611727. The next prime is 11611729. The reversal of 11611728 is 82711611.

It is an interprime number because it is at equal distance from previous prime (11611727) and next prime (11611729).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11611727) 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, 13008 + ... + 13871.

It is an arithmetic number, because the mean of its divisors is an integer number (833280).

Almost surely, 2^11611728 is an apocalyptic number.

11611728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11611728 is an abundant number, since it is smaller than the sum of its proper divisors (21719472).

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

11611728 is a wasteful number, since it uses less digits than its factorization.

11611728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26896 (or 26884 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 11611728 is about 3407.5985679067. The cubic root of 11611728 is about 226.4465028692.

The spelling of 11611728 in words is "eleven million, six hundred eleven thousand, seven hundred twenty-eight".