28776118630 has 32 divisors (see below), whose sum is σ = 59444305920. Its totient is φ = 9824811360.

The previous prime is 28776118607. The next prime is 28776118633. The reversal of 28776118630 is 3681167782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28776118633) 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, 843286 + ... + 876745.

It is an arithmetic number, because the mean of its divisors is an integer number (1857634560).

Almost surely, 2^28776118630 is an apocalyptic number.

28776118630 is an abundant number, since it is smaller than the sum of its proper divisors (30668187290).

28776118630 is a wasteful number, since it uses less digits than its factorization.

28776118630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720284.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 28776118630 in words is "twenty-eight billion, seven hundred seventy-six million, one hundred eighteen thousand, six hundred thirty".