28537628784 has 80 divisors (see below), whose sum is σ = 84291128832. Its totient is φ = 8150010624.

The previous prime is 28537628783. The next prime is 28537628789. The reversal of 28537628784 is 48782673582.

It is a super-3 number, since 3×28537628784³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28537628783) 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 15 ways as a sum of consecutive naturals, for example, 796602 + ... + 831654.

Almost surely, 2^28537628784 is an apocalyptic number.

28537628784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28537628784 is an abundant number, since it is smaller than the sum of its proper divisors (55753500048).

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

28537628784 is a wasteful number, since it uses less digits than its factorization.

28537628784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37494 (or 37488 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 60.

The spelling of 28537628784 in words is "twenty-eight billion, five hundred thirty-seven million, six hundred twenty-eight thousand, seven hundred eighty-four".