28754312193 has 18 divisors (see below), whose sum is σ = 43980391494. Its totient is φ = 18040605312.

The previous prime is 28754312179. The next prime is 28754312221. The reversal of 28754312193 is 39121345782.

It is a happy number.

28754312193 is a `hidden beast` number, since 2 + 8 + 7 + 543 + 12 + 1 + 93 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 18964594944 + 9789717249 = 137712^2 + 98943^2 .

It is not a de Polignac number, because 28754312193 - 2⁴ = 28754312177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28754312113) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2090623 + ... + 2104331.

It is an arithmetic number, because the mean of its divisors is an integer number (2443355083).

Almost surely, 2^28754312193 is an apocalyptic number.

It is an amenable number.

28754312193 is a deficient number, since it is larger than the sum of its proper divisors (15226079301).

28754312193 is an frugal number, since it uses more digits than its factorization.

28754312193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27441 (or 13729 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 28754312193 in words is "twenty-eight billion, seven hundred fifty-four million, three hundred twelve thousand, one hundred ninety-three".