28136852615 has 8 divisors (see below), whose sum is σ = 33765132528. Its totient is φ = 22508875840.

The previous prime is 28136852551. The next prime is 28136852651. The reversal of 28136852615 is 51625863182.

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

It is not a de Polignac number, because 28136852615 - 2⁶ = 28136852551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28136852615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281900 + ... + 368430.

It is an arithmetic number, because the mean of its divisors is an integer number (4220641566).

Almost surely, 2^28136852615 is an apocalyptic number.

28136852615 is a deficient number, since it is larger than the sum of its proper divisors (5628279913).

28136852615 is an equidigital number, since it uses as much as digits as its factorization.

28136852615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151569.

The product of its digits is 691200, while the sum is 47.

The spelling of 28136852615 in words is "twenty-eight billion, one hundred thirty-six million, eight hundred fifty-two thousand, six hundred fifteen".