28316124772 has 24 divisors (see below), whose sum is σ = 53517947000. Its totient is φ = 13031525376.

The previous prime is 28316124769. The next prime is 28316124773. The reversal of 28316124772 is 27742161382.

It can be written as a sum of positive squares in 4 ways, for example, as 7762314816 + 20553809956 = 88104^2 + 143366^2 .

It is a super-3 number, since 3×28316124772³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28316124773) 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, 761997 + ... + 798292.

Almost surely, 2^28316124772 is an apocalyptic number.

It is an amenable number.

28316124772 is a deficient number, since it is larger than the sum of its proper divisors (25201822228).

28316124772 is a wasteful number, since it uses less digits than its factorization.

28316124772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560655 (or 1560653 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The spelling of 28316124772 in words is "twenty-eight billion, three hundred sixteen million, one hundred twenty-four thousand, seven hundred seventy-two".