28913890415 has 8 divisors (see below), whose sum is σ = 34949929680. Its totient is φ = 22962271552.

The previous prime is 28913890393. The next prime is 28913890417. The reversal of 28913890415 is 51409831982.

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

It is a cyclic number.

It is not a de Polignac number, because 28913890415 - 2²² = 28909696111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28913890417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21104345 + ... + 21105714.

It is an arithmetic number, because the mean of its divisors is an integer number (4368741210).

Almost surely, 2^28913890415 is an apocalyptic number.

28913890415 is a deficient number, since it is larger than the sum of its proper divisors (6036039265).

28913890415 is a wasteful number, since it uses less digits than its factorization.

28913890415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42210201.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 28913890415 in words is "twenty-eight billion, nine hundred thirteen million, eight hundred ninety thousand, four hundred fifteen".