28500987726 has 40 divisors (see below), whose sum is σ = 64044368784. Its totient is φ = 9473397120.

The previous prime is 28500987719. The next prime is 28500987733. The reversal of 28500987726 is 62778900582.

It is a happy number.

28500987726 is a `hidden beast` number, since 28 + 500 + 98 + 7 + 7 + 26 = 666.

It is an interprime number because it is at equal distance from previous prime (28500987719) and next prime (28500987733).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 192010 + ... + 306381.

Almost surely, 2^28500987726 is an apocalyptic number.

28500987726 is an abundant number, since it is smaller than the sum of its proper divisors (35543381058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28500987726 is a wasteful number, since it uses less digits than its factorization.

28500987726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498758 (or 498749 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 28500987726 in words is "twenty-eight billion, five hundred million, nine hundred eighty-seven thousand, seven hundred twenty-six".