28487692308 has 24 divisors (see below), whose sum is σ = 66615484320. Its totient is φ = 9475297120.

The previous prime is 28487692297. The next prime is 28487692349. The reversal of 28487692308 is 80329678482.

It is a happy number.

It is a super-4 number, since 4×28487692308⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 2569278 + ... + 2580341.

It is an arithmetic number, because the mean of its divisors is an integer number (2775645180).

Almost surely, 2^28487692308 is an apocalyptic number.

It is an amenable number.

28487692308 is an abundant number, since it is smaller than the sum of its proper divisors (38127792012).

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

28487692308 is a wasteful number, since it uses less digits than its factorization.

28487692308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5150087 (or 5150085 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 28487692308 in words is "twenty-eight billion, four hundred eighty-seven million, six hundred ninety-two thousand, three hundred eight".