28287153072 has 50 divisors (see below), whose sum is σ = 81871231508. Its totient is φ = 9429050592.

The previous prime is 28287153061. The next prime is 28287153073. The reversal of 28287153072 is 27035178282.

28287153072 is a `hidden beast` number, since 28 + 28 + 7 + 1 + 530 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (28287153073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10911958 + ... + 10914549.

Almost surely, 2^28287153072 is an apocalyptic number.

It is an amenable number.

28287153072 is an abundant number, since it is smaller than the sum of its proper divisors (53584078436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28287153072 is a wasteful number, since it uses less digits than its factorization.

28287153072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21826527 (or 21826512 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 28287153072 in words is "twenty-eight billion, two hundred eighty-seven million, one hundred fifty-three thousand, seventy-two".