28080618 has 32 divisors (see below), whose sum is σ = 57918912. Its totient is φ = 9072000.

The previous prime is 28080607. The next prime is 28080623. The reversal of 28080618 is 81608082.

It is a super-2 number, since 2×28080618² = 1577042214523848, which contains 22 as substring.

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, 26193 + ... + 27243.

It is an arithmetic number, because the mean of its divisors is an integer number (1809966).

Almost surely, 2^28080618 is an apocalyptic number.

28080618 is an abundant number, since it is smaller than the sum of its proper divisors (29838294).

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

28080618 is a wasteful number, since it uses less digits than its factorization.

28080618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 28080618 is about 5299.1148317431. The cubic root of 28080618 is about 303.9500509463.

The spelling of 28080618 in words is "twenty-eight million, eighty thousand, six hundred eighteen".