28372398135 has 16 divisors (see below), whose sum is σ = 45623961600. Its totient is φ = 15055904160.

The previous prime is 28372398107. The next prime is 28372398137. The reversal of 28372398135 is 53189327382.

It is a happy number.

It is not a de Polignac number, because 28372398135 - 2¹⁸ = 28372135991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28372398137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4749511 + ... + 4755480.

It is an arithmetic number, because the mean of its divisors is an integer number (2851497600).

Almost surely, 2^28372398135 is an apocalyptic number.

28372398135 is a deficient number, since it is larger than the sum of its proper divisors (17251563465).

28372398135 is a wasteful number, since it uses less digits than its factorization.

28372398135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9505198.

The product of its digits is 2177280, while the sum is 51.

The spelling of 28372398135 in words is "twenty-eight billion, three hundred seventy-two million, three hundred ninety-eight thousand, one hundred thirty-five".