28907516399 has 16 divisors (see below), whose sum is σ = 30701057280. Its totient is φ = 27170484480.

The previous prime is 28907516369. The next prime is 28907516413. The reversal of 28907516399 is 99361570982.

It is a cyclic number.

It is not a de Polignac number, because 28907516399 - 2²⁰ = 28906467823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28907516369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630497 + ... + 674789.

It is an arithmetic number, because the mean of its divisors is an integer number (1918816080).

Almost surely, 2^28907516399 is an apocalyptic number.

28907516399 is a deficient number, since it is larger than the sum of its proper divisors (1793540881).

28907516399 is a wasteful number, since it uses less digits than its factorization.

28907516399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44930.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 28907516399 in words is "twenty-eight billion, nine hundred seven million, five hundred sixteen thousand, three hundred ninety-nine".