28531270348 has 24 divisors (see below), whose sum is σ = 57066501632. Its totient is φ = 12226838544.

The previous prime is 28531270331. The next prime is 28531270379. The reversal of 28531270348 is 84307213582.

It is a super-2 number, since 2×28531270348² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538711 + ... + 589297.

Almost surely, 2^28531270348 is an apocalyptic number.

28531270348 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28531270348 is an abundant number, since it is smaller than the sum of its proper divisors (28535231284).

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

28531270348 is a wasteful number, since it uses less digits than its factorization.

28531270348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70741 (or 70739 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 28531270348 in words is "twenty-eight billion, five hundred thirty-one million, two hundred seventy thousand, three hundred forty-eight".