28757636364 has 24 divisors (see below), whose sum is σ = 67104133488. Its totient is φ = 9585452800.

The previous prime is 28757636317. The next prime is 28757636377. The reversal of 28757636364 is 46363675782.

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, 350464 + ... + 424664.

It is an arithmetic number, because the mean of its divisors is an integer number (2796005562).

Almost surely, 2^28757636364 is an apocalyptic number.

It is an amenable number.

28757636364 is an abundant number, since it is smaller than the sum of its proper divisors (38346497124).

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

28757636364 is a wasteful number, since it uses less digits than its factorization.

28757636364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106505 (or 106503 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 57.

The spelling of 28757636364 in words is "twenty-eight billion, seven hundred fifty-seven million, six hundred thirty-six thousand, three hundred sixty-four".