28857167190 has 64 divisors (see below), whose sum is σ = 77077209600. Its totient is φ = 7682768352.

The previous prime is 28857167159. The next prime is 28857167219. The reversal of 28857167190 is 9176175882.

28857167190 is a `hidden beast` number, since 2 + 8 + 8 + 571 + 67 + 1 + 9 + 0 = 666.

It is a super-2 number, since 2×28857167190² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80799 + ... + 253461.

It is an arithmetic number, because the mean of its divisors is an integer number (1204331400).

Almost surely, 2^28857167190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28857167190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38538604800).

28857167190 is an abundant number, since it is smaller than the sum of its proper divisors (48220042410).

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

28857167190 is a wasteful number, since it uses less digits than its factorization.

28857167190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173298 (or 173292 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 54.

The spelling of 28857167190 in words is "twenty-eight billion, eight hundred fifty-seven million, one hundred sixty-seven thousand, one hundred ninety".