28589855 has 16 divisors (see below), whose sum is σ = 39434304. Its totient is φ = 19491840.

The previous prime is 28589849. The next prime is 28589879. The reversal of 28589855 is 55898582.

It is not a de Polignac number, because 28589855 - 2⁴ = 28589839 is a prime.

It is a congruent number.

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, 4079 + ... + 8591.

It is an arithmetic number, because the mean of its divisors is an integer number (2464644).

Almost surely, 2^28589855 is an apocalyptic number.

28589855 is a deficient number, since it is larger than the sum of its proper divisors (10844449).

28589855 is a wasteful number, since it uses less digits than its factorization.

28589855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706.

The product of its digits is 1152000, while the sum is 50.

The square root of 28589855 is about 5346.9481949987. The cubic root of 28589855 is about 305.7764147694.

The spelling of 28589855 in words is "twenty-eight million, five hundred eighty-nine thousand, eight hundred fifty-five".