11272909 has 16 divisors (see below), whose sum is σ = 12600000. Its totient is φ = 10039680.

The previous prime is 11272907. The next prime is 11272927. The reversal of 11272909 is 90927211.

It is a cyclic number.

It is not a de Polignac number, because 11272909 - 2¹ = 11272907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11272907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22342 + ... + 22840.

It is an arithmetic number, because the mean of its divisors is an integer number (787500).

Almost surely, 2^11272909 is an apocalyptic number.

11272909 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11272909 is a deficient number, since it is larger than the sum of its proper divisors (1327091).

11272909 is a wasteful number, since it uses less digits than its factorization.

11272909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 11272909 is about 3357.5153015288. The cubic root of 11272909 is about 224.2222297618. Note that the first 5 decimals are identical.

The spelling of 11272909 in words is "eleven million, two hundred seventy-two thousand, nine hundred nine".