28183057 has 8 divisors (see below), whose sum is σ = 32263232. Its totient is φ = 24116400.

The previous prime is 28183039. The next prime is 28183063. The reversal of 28183057 is 75038182.

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

It is not a de Polignac number, because 28183057 - 2²³ = 19794449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28183097) 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, 1582 + ... + 7672.

It is an arithmetic number, because the mean of its divisors is an integer number (4032904).

Almost surely, 2^28183057 is an apocalyptic number.

It is an amenable number.

28183057 is a deficient number, since it is larger than the sum of its proper divisors (4080175).

28183057 is an equidigital number, since it uses as much as digits as its factorization.

28183057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6759.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 28183057 is about 5308.7717035111. The cubic root of 28183057 is about 304.3192089387.

It can be divided in two parts, 281 and 83057, that added together give a palindrome (83338).

The spelling of 28183057 in words is "twenty-eight million, one hundred eighty-three thousand, fifty-seven".