28799618 has 8 divisors (see below), whose sum is σ = 43266960. Its totient is φ = 14377300.

The previous prime is 28799597. The next prime is 28799633. The reversal of 28799618 is 81699782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×28799618³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9608 + ... + 12243.

It is an arithmetic number, because the mean of its divisors is an integer number (5408370).

Almost surely, 2^28799618 is an apocalyptic number.

28799618 is a deficient number, since it is larger than the sum of its proper divisors (14467342).

28799618 is a wasteful number, since it uses less digits than its factorization.

28799618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22512.

The product of its digits is 435456, while the sum is 50.

The square root of 28799618 is about 5366.5275551328. The cubic root of 28799618 is about 306.5224177190.

The spelling of 28799618 in words is "twenty-eight million, seven hundred ninety-nine thousand, six hundred eighteen".