28200131 has 8 divisors (see below), whose sum is σ = 29157744. Its totient is φ = 27256320.

The previous prime is 28200113. The next prime is 28200143. The reversal of 28200131 is 13100282.

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 28200131 - 2²² = 24005827 is a prime.

It is a super-2 number, since 2×28200131² = 1590494776834322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28200191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791 + ... + 7551.

It is an arithmetic number, because the mean of its divisors is an integer number (3644718).

Almost surely, 2^28200131 is an apocalyptic number.

28200131 is a deficient number, since it is larger than the sum of its proper divisors (957613).

28200131 is an equidigital number, since it uses as much as digits as its factorization.

28200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6901.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 28200131 is about 5310.3795532900. The cubic root of 28200131 is about 304.3806512590.

The spelling of 28200131 in words is "twenty-eight million, two hundred thousand, one hundred thirty-one".