28227185212080 has 160 divisors (see below), whose sum is σ = 90721439170560. Its totient is φ = 7252624696320.

The previous prime is 28227185212043. The next prime is 28227185212087. The reversal of 28227185212080 is 8021258172282.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (28227185212087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6580032 + ... + 9987551.

It is an arithmetic number, because the mean of its divisors is an integer number (567008994816).

Almost surely, 2^{28227185212080} is an apocalyptic number.

28227185212080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28227185212080 is an abundant number, since it is smaller than the sum of its proper divisors (62494253958480).

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

28227185212080 is a wasteful number, since it uses less digits than its factorization.

28227185212080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16567859 (or 16567853 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 48.

The spelling of 28227185212080 in words is "twenty-eight trillion, two hundred twenty-seven billion, one hundred eighty-five million, two hundred twelve thousand, eighty".