28205062992 has 90 divisors (see below), whose sum is σ = 79210292382. Its totient is φ = 9368982528.

The previous prime is 28205062973. The next prime is 28205062997. The reversal of 28205062992 is 29926050282.

It can be written as a sum of positive squares in 3 ways, for example, as 1953286416 + 26251776576 = 44196^2 + 162024^2 .

It is a super-4 number, since 4×28205062992⁴ (a number of 43 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28205062997) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 47563048 + ... + 47563640.

Almost surely, 2^28205062992 is an apocalyptic number.

It is an amenable number.

28205062992 is an abundant number, since it is smaller than the sum of its proper divisors (51005229390).

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

28205062992 is an equidigital number, since it uses as much as digits as its factorization.

28205062992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 28205062992 in words is "twenty-eight billion, two hundred five million, sixty-two thousand, nine hundred ninety-two".