28254831 has 24 divisors (see below), whose sum is σ = 41706672. Its totient is φ = 17001600.

The previous prime is 28254803. The next prime is 28254841. The reversal of 28254831 is 13845282.

It is not a de Polignac number, because 28254831 - 2⁹ = 28254319 is a prime.

It is a super-2 number, since 2×28254831² = 1596670949677122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 28254792 and 28254801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28254841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100411 + ... + 100691.

It is an arithmetic number, because the mean of its divisors is an integer number (1737778).

Almost surely, 2^28254831 is an apocalyptic number.

28254831 is a deficient number, since it is larger than the sum of its proper divisors (13451841).

28254831 is a wasteful number, since it uses less digits than its factorization.

28254831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 572 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 28254831 is about 5315.5273491912. The cubic root of 28254831 is about 304.5773272730.

The spelling of 28254831 in words is "twenty-eight million, two hundred fifty-four thousand, eight hundred thirty-one".