28214313880 has 32 divisors (see below), whose sum is σ = 63723607200. Its totient is φ = 11242809856.

The previous prime is 28214313871. The next prime is 28214313917. The reversal of 28214313880 is 8831341282.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

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, 1330465 + ... + 1351504.

It is an arithmetic number, because the mean of its divisors is an integer number (1991362725).

Almost surely, 2^28214313880 is an apocalyptic number.

28214313880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28214313880 is an abundant number, since it is smaller than the sum of its proper divisors (35509293320).

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

28214313880 is a wasteful number, since it uses less digits than its factorization.

28214313880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682243 (or 2682239 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 28214313880 in words is "twenty-eight billion, two hundred fourteen million, three hundred thirteen thousand, eight hundred eighty".