28327214507 has 4 divisors (see below), whose sum is σ = 28329478320. Its totient is φ = 28324950696.

The previous prime is 28327214459. The next prime is 28327214521. The reversal of 28327214507 is 70541272382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28327214507 - 2¹⁰ = 28327213483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28327214527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1113032 + ... + 1138197.

It is an arithmetic number, because the mean of its divisors is an integer number (7082369580).

Almost surely, 2^28327214507 is an apocalyptic number.

28327214507 is a deficient number, since it is larger than the sum of its proper divisors (2263813).

28327214507 is a wasteful number, since it uses less digits than its factorization.

28327214507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263812.

The product of its (nonzero) digits is 188160, while the sum is 41.

Adding to 28327214507 its reverse (70541272382), we get a palindrome (98868486889).

The spelling of 28327214507 in words is "twenty-eight billion, three hundred twenty-seven million, two hundred fourteen thousand, five hundred seven".