28787324235 has 16 divisors (see below), whose sum is σ = 46062971136. Its totient is φ = 15352155488.

The previous prime is 28787324231. The next prime is 28787324257. The reversal of 28787324235 is 53242378782.

It is a cyclic number.

It is not a de Polignac number, because 28787324235 - 2² = 28787324231 is a prime.

It is a super-2 number, since 2×28787324235² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28787324231) 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, 181282 + ... + 300728.

It is an arithmetic number, because the mean of its divisors is an integer number (2878935696).

Almost surely, 2^28787324235 is an apocalyptic number.

28787324235 is a deficient number, since it is larger than the sum of its proper divisors (17275646901).

28787324235 is a wasteful number, since it uses less digits than its factorization.

28787324235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135522.

The product of its digits is 4515840, while the sum is 51.

The spelling of 28787324235 in words is "twenty-eight billion, seven hundred eighty-seven million, three hundred twenty-four thousand, two hundred thirty-five".