28057743837 has 24 divisors (see below), whose sum is σ = 41642065920. Its totient is φ = 18191368800.

The previous prime is 28057743799. The next prime is 28057743839. The reversal of 28057743837 is 73834775082.

It is a happy number.

28057743837 is a `hidden beast` number, since 2 + 8 + 0 + 577 + 4 + 38 + 37 = 666.

It is not a de Polignac number, because 28057743837 - 2⁶ = 28057743773 is a prime.

It is a super-2 number, since 2×28057743837² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28057743839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 764964 + ... + 800802.

It is an arithmetic number, because the mean of its divisors is an integer number (1735086080).

Almost surely, 2^28057743837 is an apocalyptic number.

It is an amenable number.

28057743837 is a deficient number, since it is larger than the sum of its proper divisors (13584322083).

28057743837 is a wasteful number, since it uses less digits than its factorization.

28057743837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38233 (or 38230 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 54.

The spelling of 28057743837 in words is "twenty-eight billion, fifty-seven million, seven hundred forty-three thousand, eight hundred thirty-seven".