28920370095 has 24 divisors (see below), whose sum is σ = 50144094000. Its totient is φ = 15419442816.

The previous prime is 28920370091. The next prime is 28920370099. The reversal of 28920370095 is 59007302982.

It is an interprime number because it is at equal distance from previous prime (28920370091) and next prime (28920370099).

It is not a de Polignac number, because 28920370095 - 2² = 28920370091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28920370095.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28920370091) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 51051 + ... + 245859.

It is an arithmetic number, because the mean of its divisors is an integer number (2089337250).

Almost surely, 2^28920370095 is an apocalyptic number.

28920370095 is a deficient number, since it is larger than the sum of its proper divisors (21223723905).

28920370095 is a wasteful number, since it uses less digits than its factorization.

28920370095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198119 (or 198116 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 28920370095 in words is "twenty-eight billion, nine hundred twenty million, three hundred seventy thousand, ninety-five".