28637198472 has 32 divisors (see below), whose sum is σ = 71730442080. Its totient is φ = 9527406720.

The previous prime is 28637198467. The next prime is 28637198477. The reversal of 28637198472 is 27489173682.

It is an interprime number because it is at equal distance from previous prime (28637198467) and next prime (28637198477).

It is not an unprimeable number, because it can be changed into a prime (28637198477) 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 7 ways as a sum of consecutive naturals, for example, 1132618 + ... + 1157625.

It is an arithmetic number, because the mean of its divisors is an integer number (2241576315).

Almost surely, 2^28637198472 is an apocalyptic number.

It is an amenable number.

28637198472 is an abundant number, since it is smaller than the sum of its proper divisors (43093243608).

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

28637198472 is a wasteful number, since it uses less digits than its factorization.

28637198472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290773 (or 2290769 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 57.

The spelling of 28637198472 in words is "twenty-eight billion, six hundred thirty-seven million, one hundred ninety-eight thousand, four hundred seventy-two".