28254791 has 6 divisors (see below), whose sum is σ = 29040480. Its totient is φ = 27489816.

The previous prime is 28254763. The next prime is 28254803. The reversal of 28254791 is 19745282.

It is not a de Polignac number, because 28254791 - 2⁶ = 28254727 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 (28254701) 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 5 ways as a sum of consecutive naturals, for example, 8951 + ... + 11688.

It is an arithmetic number, because the mean of its divisors is an integer number (4840080).

Almost surely, 2^28254791 is an apocalyptic number.

28254791 is a deficient number, since it is larger than the sum of its proper divisors (785689).

28254791 is an equidigital number, since it uses as much as digits as its factorization.

28254791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20713 (or 20676 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 28254791 is about 5315.5235866281. The cubic root of 28254791 is about 304.5771835442.

The spelling of 28254791 in words is "twenty-eight million, two hundred fifty-four thousand, seven hundred ninety-one".