28913936692 has 6 divisors (see below), whose sum is σ = 50599389218. Its totient is φ = 14456968344.

The previous prime is 28913936669. The next prime is 28913936699. The reversal of 28913936692 is 29663931982.

It can be written as a sum of positive squares in only one way, i.e., 27637732516 + 1276204176 = 166246^2 + 35724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28913936699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3614242083 + ... + 3614242090.

Almost surely, 2^28913936692 is an apocalyptic number.

It is an amenable number.

28913936692 is a deficient number, since it is larger than the sum of its proper divisors (21685452526).

28913936692 is a wasteful number, since it uses less digits than its factorization.

28913936692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7228484177 (or 7228484175 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 58.

The spelling of 28913936692 in words is "twenty-eight billion, nine hundred thirteen million, nine hundred thirty-six thousand, six hundred ninety-two".