11661072 has 40 divisors (see below), whose sum is σ = 30251040. Its totient is φ = 3870720.

The previous prime is 11661061. The next prime is 11661073. The reversal of 11661072 is 27016611.

11661072 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 (24).

It is not an unprimeable number, because it can be changed into a prime (11661073) 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, 17872 + ... + 18512.

It is an arithmetic number, because the mean of its divisors is an integer number (756276).

Almost surely, 2^11661072 is an apocalyptic number.

11661072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11661072 is an abundant number, since it is smaller than the sum of its proper divisors (18589968).

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

11661072 is a wasteful number, since it uses less digits than its factorization.

11661072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 11661072 is about 3414.8311817717. The cubic root of 11661072 is about 226.7668108043.

Adding to 11661072 its reverse (27016611), we get a palindrome (38677683).

The spelling of 11661072 in words is "eleven million, six hundred sixty-one thousand, seventy-two".