28790016515 has 8 divisors (see below), whose sum is σ = 37205559888. Its totient is φ = 21260319840.

The previous prime is 28790016509. The next prime is 28790016523. The reversal of 28790016515 is 51561009782.

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

It is not a de Polignac number, because 28790016515 - 2⁸ = 28790016259 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 221461601 + ... + 221461730.

It is an arithmetic number, because the mean of its divisors is an integer number (4650694986).

Almost surely, 2^28790016515 is an apocalyptic number.

28790016515 is a deficient number, since it is larger than the sum of its proper divisors (8415543373).

28790016515 is a wasteful number, since it uses less digits than its factorization.

28790016515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442923349.

The product of its (nonzero) digits is 151200, while the sum is 44.

The spelling of 28790016515 in words is "twenty-eight billion, seven hundred ninety million, sixteen thousand, five hundred fifteen".