28131624116 has 24 divisors (see below), whose sum is σ = 53142203520. Its totient is φ = 12990313952.

The previous prime is 28131624107. The next prime is 28131624119. The reversal of 28131624116 is 61142613182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28131624119) 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, 5269376 + ... + 5274711.

It is an arithmetic number, because the mean of its divisors is an integer number (2214258480).

Almost surely, 2^28131624116 is an apocalyptic number.

It is an amenable number.

28131624116 is a deficient number, since it is larger than the sum of its proper divisors (25010579404).

28131624116 is a wasteful number, since it uses less digits than its factorization.

28131624116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10544143 (or 10544141 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The spelling of 28131624116 in words is "twenty-eight billion, one hundred thirty-one million, six hundred twenty-four thousand, one hundred sixteen".