28347692272 has 10 divisors (see below), whose sum is σ = 54923653808. Its totient is φ = 14173846128.

The previous prime is 28347692231. The next prime is 28347692273. The reversal of 28347692272 is 27229674382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28347692273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 885865368 + ... + 885865399.

Almost surely, 2^28347692272 is an apocalyptic number.

It is an amenable number.

28347692272 is a deficient number, since it is larger than the sum of its proper divisors (26575961536).

28347692272 is a wasteful number, since it uses less digits than its factorization.

28347692272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771730775 (or 1771730769 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 52.

The spelling of 28347692272 in words is "twenty-eight billion, three hundred forty-seven million, six hundred ninety-two thousand, two hundred seventy-two".