28907904075 has 12 divisors (see below), whose sum is σ = 47794401528. Its totient is φ = 15417548800.

The previous prime is 28907904059. The next prime is 28907904101. The reversal of 28907904075 is 57040970982.

It is not a de Polignac number, because 28907904075 - 2⁴ = 28907904059 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192719286 + ... + 192719435.

It is an arithmetic number, because the mean of its divisors is an integer number (3982866794).

Almost surely, 2^28907904075 is an apocalyptic number.

28907904075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28907904075 is a deficient number, since it is larger than the sum of its proper divisors (18886497453).

28907904075 is a wasteful number, since it uses less digits than its factorization.

28907904075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385438734 (or 385438729 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 28907904075 in words is "twenty-eight billion, nine hundred seven million, nine hundred four thousand, seventy-five".