28531214830 has 8 divisors (see below), whose sum is σ = 51356186712. Its totient is φ = 11412485928.

The previous prime is 28531214779. The next prime is 28531214843. The reversal of 28531214830 is 3841213582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28531214830² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28531214830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426560732 + ... + 1426560751.

It is an arithmetic number, because the mean of its divisors is an integer number (6419523339).

Almost surely, 2^28531214830 is an apocalyptic number.

28531214830 is a deficient number, since it is larger than the sum of its proper divisors (22824971882).

28531214830 is a wasteful number, since it uses less digits than its factorization.

28531214830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853121490.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 28531214830 in words is "twenty-eight billion, five hundred thirty-one million, two hundred fourteen thousand, eight hundred thirty".