28254904992 has 36 divisors (see below), whose sum is σ = 80349886890. Its totient is φ = 9418301568.

The previous prime is 28254904877. The next prime is 28254904999. The reversal of 28254904992 is 29940945282.

It is a happy number.

28254904992 is a `hidden beast` number, since 2 + 8 + 2 + 549 + 0 + 4 + 9 + 92 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27514847376 + 740057616 = 165876^2 + 27204^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×28254904992² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28254904999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49053367 + ... + 49053942.

Almost surely, 2^28254904992 is an apocalyptic number.

It is an amenable number.

28254904992 is an abundant number, since it is smaller than the sum of its proper divisors (52094981898).

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

28254904992 is a wasteful number, since it uses less digits than its factorization.

28254904992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98107325 (or 98107314 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 28254904992 in words is "twenty-eight billion, two hundred fifty-four million, nine hundred four thousand, nine hundred ninety-two".