28940618 has 8 divisors (see below), whose sum is σ = 49612512. Its totient is φ = 12403116.

The previous prime is 28940609. The next prime is 28940627. The reversal of 28940618 is 81604982.

It is an interprime number because it is at equal distance from previous prime (28940609) and next prime (28940627).

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

It is a Curzon number.

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, 1033580 + ... + 1033607.

It is an arithmetic number, because the mean of its divisors is an integer number (6201564).

Almost surely, 2^28940618 is an apocalyptic number.

28940618 is a deficient number, since it is larger than the sum of its proper divisors (20671894).

28940618 is a wasteful number, since it uses less digits than its factorization.

28940618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067196.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 28940618 is about 5379.6485015287. The cubic root of 28940618 is about 307.0218377588.

The spelling of 28940618 in words is "twenty-eight million, nine hundred forty thousand, six hundred eighteen".