11428831 has 8 divisors (see below), whose sum is σ = 11748240. Its totient is φ = 11113728.

The previous prime is 11428829. The next prime is 11428853. The reversal of 11428831 is 13882411.

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

It is a cyclic number.

It is not a de Polignac number, because 11428831 - 2¹ = 11428829 is a prime.

It is a super-2 number, since 2×11428831² = 261236356053122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11428831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11428331) 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, 4725 + ... + 6721.

It is an arithmetic number, because the mean of its divisors is an integer number (1468530).

Almost surely, 2^11428831 is an apocalyptic number.

11428831 is a deficient number, since it is larger than the sum of its proper divisors (319409).

11428831 is an equidigital number, since it uses as much as digits as its factorization.

11428831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153.

The product of its digits is 1536, while the sum is 28.

The square root of 11428831 is about 3380.6554098281. The cubic root of 11428831 is about 225.2512814028.

The spelling of 11428831 in words is "eleven million, four hundred twenty-eight thousand, eight hundred thirty-one".