28452858 has 32 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 8094000.

The previous prime is 28452841. The next prime is 28452871. The reversal of 28452858 is 85825482.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9193 + ... + 11891.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^28452858 is an apocalyptic number.

28452858 is an abundant number, since it is smaller than the sum of its proper divisors (36865542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28452858 is a wasteful number, since it uses less digits than its factorization.

28452858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962.

The product of its digits is 204800, while the sum is 42.

The square root of 28452858 is about 5334.1220458478. The cubic root of 28452858 is about 305.2872256208.

The spelling of 28452858 in words is "twenty-eight million, four hundred fifty-two thousand, eight hundred fifty-eight".