28114208172 has 72 divisors (see below), whose sum is σ = 71739668000. Its totient is φ = 9283051008.

The previous prime is 28114208153. The next prime is 28114208183. The reversal of 28114208172 is 27180241182.

It is a happy number.

28114208172 is a `hidden beast` number, since 281 + 1 + 4 + 208 + 172 = 666.

It is a super-2 number, since 2×28114208172² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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, 1631988 + ... + 1649124.

Almost surely, 2^28114208172 is an apocalyptic number.

It is an amenable number.

28114208172 is an abundant number, since it is smaller than the sum of its proper divisors (43625459828).

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

28114208172 is a wasteful number, since it uses less digits than its factorization.

28114208172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17575 (or 17570 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The spelling of 28114208172 in words is "twenty-eight billion, one hundred fourteen million, two hundred eight thousand, one hundred seventy-two".