28065539992 has 32 divisors (see below), whose sum is σ = 60472732320. Its totient is φ = 11961630720.

The previous prime is 28065539963. The next prime is 28065540007. The reversal of 28065539992 is 29993556082.

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, 1374313 + ... + 1394584.

It is an arithmetic number, because the mean of its divisors is an integer number (1889772885).

Almost surely, 2^28065539992 is an apocalyptic number.

It is an amenable number.

28065539992 is an abundant number, since it is smaller than the sum of its proper divisors (32407192328).

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

28065539992 is a wasteful number, since it uses less digits than its factorization.

28065539992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769091 (or 2769087 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 58.

The spelling of 28065539992 in words is "twenty-eight billion, sixty-five million, five hundred thirty-nine thousand, nine hundred ninety-two".