28107874565 has 8 divisors (see below), whose sum is σ = 33730535040. Its totient is φ = 22485575952.

The previous prime is 28107874559. The next prime is 28107874567. The reversal of 28107874565 is 56547870182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28107874565 - 2⁸ = 28107874309 is a prime.

It is a super-2 number, since 2×28107874565² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28107874567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128696 + ... + 269774.

It is an arithmetic number, because the mean of its divisors is an integer number (4216316880).

Almost surely, 2^28107874565 is an apocalyptic number.

It is an amenable number.

28107874565 is a deficient number, since it is larger than the sum of its proper divisors (5622660475).

28107874565 is a wasteful number, since it uses less digits than its factorization.

28107874565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180931.

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 28107874565 in words is "twenty-eight billion, one hundred seven million, eight hundred seventy-four thousand, five hundred sixty-five".