11372991 has 8 divisors (see below), whose sum is σ = 17330304. Its totient is φ = 6498840.

The previous prime is 11372987. The next prime is 11373029. The reversal of 11372991 is 19927311.

11372991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11372991 - 2² = 11372987 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11372981) 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, 270765 + ... + 270806.

It is an arithmetic number, because the mean of its divisors is an integer number (2166288).

Almost surely, 2^11372991 is an apocalyptic number.

11372991 is a deficient number, since it is larger than the sum of its proper divisors (5957313).

11372991 is an equidigital number, since it uses as much as digits as its factorization.

11372991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541581.

The product of its digits is 3402, while the sum is 33.

The square root of 11372991 is about 3372.3865436809. The cubic root of 11372991 is about 224.8838313899.

The spelling of 11372991 in words is "eleven million, three hundred seventy-two thousand, nine hundred ninety-one".