28889907506792 has 16 divisors (see below), whose sum is σ = 54194606676900. Its totient is φ = 14438012392960.

The previous prime is 28889907506791. The next prime is 28889907506819. The reversal of 28889907506792 is 29760570998882.

It can be written as a sum of positive squares in 2 ways, for example, as 28762562729476 + 127344777316 = 5363074^2 + 356854^2 .

It is a super-2 number, since 2×28889907506792² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28889907506791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867652367 + ... + 867685662.

Almost surely, 2^{28889907506792} is an apocalyptic number.

It is an amenable number.

28889907506792 is a deficient number, since it is larger than the sum of its proper divisors (25304699170108).

28889907506792 is a wasteful number, since it uses less digits than its factorization.

28889907506792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735340116 (or 1735340112 counting only the distinct ones).

The product of its (nonzero) digits is 2194698240, while the sum is 80.

The spelling of 28889907506792 in words is "twenty-eight trillion, eight hundred eighty-nine billion, nine hundred seven million, five hundred six thousand, seven hundred ninety-two".