11209872 has 40 divisors (see below), whose sum is σ = 29080480. Its totient is φ = 3720960.

The previous prime is 11209859. The next prime is 11209907. The reversal of 11209872 is 27890211.

It is a super-2 number, since 2×11209872² = 251322460512768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19347 + ... + 19917.

It is an arithmetic number, because the mean of its divisors is an integer number (727012).

Almost surely, 2^11209872 is an apocalyptic number.

11209872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11209872 is an abundant number, since it is smaller than the sum of its proper divisors (17870608).

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

11209872 is a wasteful number, since it uses less digits than its factorization.

11209872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 11209872 is about 3348.1146933760. The cubic root of 11209872 is about 223.8035054049.

The spelling of 11209872 in words is "eleven million, two hundred nine thousand, eight hundred seventy-two".