28518855 has 16 divisors (see below), whose sum is σ = 45702144. Its totient is φ = 15186080.

The previous prime is 28518811. The next prime is 28518859. The reversal of 28518855 is 55881582.

It is not a de Polignac number, because 28518855 - 2⁷ = 28518727 is a prime.

It is a super-2 number, since 2×28518855² = 1626650181022050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28518859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12622 + ... + 14708.

It is an arithmetic number, because the mean of its divisors is an integer number (2856384).

Almost surely, 2^28518855 is an apocalyptic number.

28518855 is a deficient number, since it is larger than the sum of its proper divisors (17183289).

28518855 is a wasteful number, since it uses less digits than its factorization.

28518855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006.

The product of its digits is 128000, while the sum is 42.

The square root of 28518855 is about 5340.3047665840. The cubic root of 28518855 is about 305.5230833934.

The spelling of 28518855 in words is "twenty-eight million, five hundred eighteen thousand, eight hundred fifty-five".