28724410125 has 108 divisors (see below), whose sum is σ = 53835022332. Its totient is φ = 14734548000.

The previous prime is 28724410123. The next prime is 28724410163. The reversal of 28724410125 is 52101442782.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

28724410125 is a `hidden beast` number, since 28 + 72 + 441 + 0 + 125 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 919181124 + 27805229001 = 30318^2 + 166749^2 .

It is not a de Polignac number, because 28724410125 - 2¹ = 28724410123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28724410125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28724410123) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 176223294 + ... + 176223456.

It is an arithmetic number, because the mean of its divisors is an integer number (498472429).

Almost surely, 2^28724410125 is an apocalyptic number.

28724410125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28724410125 is a deficient number, since it is larger than the sum of its proper divisors (25110612207).

28724410125 is an equidigital number, since it uses as much as digits as its factorization.

28724410125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The spelling of 28724410125 in words is "twenty-eight billion, seven hundred twenty-four million, four hundred ten thousand, one hundred twenty-five".