28857603744 has 36 divisors (see below), whose sum is σ = 82063811466. Its totient is φ = 9619201152.

The previous prime is 28857603739. The next prime is 28857603781. The reversal of 28857603744 is 44730675882.

28857603744 is a `hidden beast` number, since 28 + 8 + 5 + 7 + 603 + 7 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28365296400 + 492307344 = 168420^2 + 22188^2 .

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

It is a super-2 number, since 2×28857603744² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50099719 + ... + 50100294.

Almost surely, 2^28857603744 is an apocalyptic number.

28857603744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28857603744 is an abundant number, since it is smaller than the sum of its proper divisors (53206207722).

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

28857603744 is a wasteful number, since it uses less digits than its factorization.

28857603744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100200029 (or 100200018 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 28857603744 in words is "twenty-eight billion, eight hundred fifty-seven million, six hundred three thousand, seven hundred forty-four".