28912314992 has 60 divisors (see below), whose sum is σ = 61829563488. Its totient is φ = 13087219200.

The previous prime is 28912314967. The next prime is 28912315001. The reversal of 28912314992 is 29941321982.

It is a self number, because there is not a number n which added to its sum of digits gives 28912314992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 435593 + ... + 497559.

Almost surely, 2^28912314992 is an apocalyptic number.

28912314992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28912314992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30914781744).

28912314992 is an abundant number, since it is smaller than the sum of its proper divisors (32917248496).

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

28912314992 is a wasteful number, since it uses less digits than its factorization.

28912314992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62238 (or 62221 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The spelling of 28912314992 in words is "twenty-eight billion, nine hundred twelve million, three hundred fourteen thousand, nine hundred ninety-two".