28500694367 has 8 divisors (see below), whose sum is σ = 29213272032. Its totient is φ = 27805488240.

The previous prime is 28500694363. The next prime is 28500694373. The reversal of 28500694367 is 76349600582.

It is a happy number.

It is not a de Polignac number, because 28500694367 - 2² = 28500694363 is a prime.

It is a super-2 number, since 2×28500694367² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28500694363) 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, 137843 + ... + 275684.

It is an arithmetic number, because the mean of its divisors is an integer number (3651659004).

Almost surely, 2^28500694367 is an apocalyptic number.

28500694367 is a deficient number, since it is larger than the sum of its proper divisors (712577665).

28500694367 is an frugal number, since it uses more digits than its factorization.

28500694367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413650 (or 413568 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 28500694367 in words is "twenty-eight billion, five hundred million, six hundred ninety-four thousand, three hundred sixty-seven".