28557742412 has 24 divisors (see below), whose sum is σ = 51335244240. Its totient is φ = 13890657600.

The previous prime is 28557742393. The next prime is 28557742439. The reversal of 28557742412 is 21424775582.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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, 1187039 + ... + 1210857.

It is an arithmetic number, because the mean of its divisors is an integer number (2138968510).

Almost surely, 2^28557742412 is an apocalyptic number.

It is an amenable number.

28557742412 is a deficient number, since it is larger than the sum of its proper divisors (22777501828).

28557742412 is a wasteful number, since it uses less digits than its factorization.

28557742412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31961 (or 31959 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 47.

The spelling of 28557742412 in words is "twenty-eight billion, five hundred fifty-seven million, seven hundred forty-two thousand, four hundred twelve".