28369720418 has 32 divisors (see below), whose sum is σ = 46459344960. Its totient is φ = 12914412480.

The previous prime is 28369720403. The next prime is 28369720427. The reversal of 28369720418 is 81402796382.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614813 + ... + 659343.

It is an arithmetic number, because the mean of its divisors is an integer number (1451854530).

Almost surely, 2^28369720418 is an apocalyptic number.

28369720418 is a deficient number, since it is larger than the sum of its proper divisors (18089624542).

28369720418 is a wasteful number, since it uses less digits than its factorization.

28369720418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44882.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 28369720418 in words is "twenty-eight billion, three hundred sixty-nine million, seven hundred twenty thousand, four hundred eighteen".