28459057 has 4 divisors (see below), whose sum is σ = 31046256. Its totient is φ = 25871860.

The previous prime is 28459051. The next prime is 28459061. The reversal of 28459057 is 75095482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28459057 - 2⁷ = 28458929 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28459051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1293583 + ... + 1293604.

It is an arithmetic number, because the mean of its divisors is an integer number (7761564).

Almost surely, 2^28459057 is an apocalyptic number.

It is an amenable number.

28459057 is a deficient number, since it is larger than the sum of its proper divisors (2587199).

28459057 is a wasteful number, since it uses less digits than its factorization.

28459057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587198.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 28459057 is about 5334.7030845212. The cubic root of 28459057 is about 305.3093949004.

The spelling of 28459057 in words is "twenty-eight million, four hundred fifty-nine thousand, fifty-seven".