28956194730 has 24 divisors (see below), whose sum is σ = 75286106532. Its totient is φ = 7721651904.

The previous prime is 28956194719. The next prime is 28956194749. The reversal of 28956194730 is 3749165982.

28956194730 is a `hidden beast` number, since 2 + 8 + 9 + 561 + 9 + 4 + 73 + 0 = 666.

28956194730 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 23557031289 + 5399163441 = 153483^2 + 73479^2 .

It is a super-2 number, since 2×28956194730² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160867659 + ... + 160867838.

It is a 2-persistent number, because it is pandigital, and so is 2⋅28956194730 = 57912389460, but 3⋅28956194730 = 86868584190 is not.

Almost surely, 2^28956194730 is an apocalyptic number.

28956194730 is an abundant number, since it is smaller than the sum of its proper divisors (46329911802).

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

28956194730 is a wasteful number, since it uses less digits than its factorization.

28956194730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321735510 (or 321735507 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 28956194730 in words is "twenty-eight billion, nine hundred fifty-six million, one hundred ninety-four thousand, seven hundred thirty".