11161872 has 30 divisors (see below), whose sum is σ = 31238142. Its totient is φ = 3720576.

The previous prime is 11161867. The next prime is 11161879. The reversal of 11161872 is 27816111.

It can be written as a sum of positive squares in only one way, i.e., 11048976 + 112896 = 3324^2 + 336^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (11161879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38613 + ... + 38900.

Almost surely, 2^11161872 is an apocalyptic number.

11161872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11161872 is an abundant number, since it is smaller than the sum of its proper divisors (20076270).

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

11161872 is a wasteful number, since it uses less digits than its factorization.

11161872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77527 (or 77518 counting only the distinct ones).

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

The square root of 11161872 is about 3340.9387902205. The cubic root of 11161872 is about 223.4836106475.

Adding to 11161872 its reverse (27816111), we get a palindrome (38977983).

The spelling of 11161872 in words is "eleven million, one hundred sixty-one thousand, eight hundred seventy-two".