28066175748 has 72 divisors (see below), whose sum is σ = 78867000576. Its totient is φ = 8357169600.

The previous prime is 28066175743. The next prime is 28066175771. The reversal of 28066175748 is 84757166082.

28066175748 is a `hidden beast` number, since 2 + 8 + 0 + 6 + 61 + 7 + 574 + 8 = 666.

It is a super-2 number, since 2×28066175748² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28066175694 and 28066175703.

It is not an unprimeable number, because it can be changed into a prime (28066175743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 952758 + ... + 981773.

It is an arithmetic number, because the mean of its divisors is an integer number (1095375008).

Almost surely, 2^28066175748 is an apocalyptic number.

It is an amenable number.

28066175748 is an abundant number, since it is smaller than the sum of its proper divisors (50800824828).

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

28066175748 is a wasteful number, since it uses less digits than its factorization.

28066175748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934585 (or 1934580 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

It can be divided in two parts, 280661 and 75748, that added together give a square (356409 = 597²).

The spelling of 28066175748 in words is "twenty-eight billion, sixty-six million, one hundred seventy-five thousand, seven hundred forty-eight".