28907516398 has 16 divisors (see below), whose sum is σ = 43435672560. Its totient is φ = 14428979136.

The previous prime is 28907516369. The next prime is 28907516413. The reversal of 28907516398 is 89361570982.

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, 4252090 + ... + 4258882.

It is an arithmetic number, because the mean of its divisors is an integer number (2714729535).

Almost surely, 2^28907516398 is an apocalyptic number.

28907516398 is a deficient number, since it is larger than the sum of its proper divisors (14528156162).

28907516398 is a wasteful number, since it uses less digits than its factorization.

28907516398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10131.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 28907516398 in words is "twenty-eight billion, nine hundred seven million, five hundred sixteen thousand, three hundred ninety-eight".