1881224828 has 48 divisors (see below), whose sum is σ = 3992877504. Its totient is φ = 757079040.

The previous prime is 1881224803. The next prime is 1881224831. The reversal of 1881224828 is 8284221881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215150 + ... + 223722.

It is an arithmetic number, because the mean of its divisors is an integer number (83184948).

Almost surely, 2^1881224828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1881224828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1996438752).

1881224828 is an abundant number, since it is smaller than the sum of its proper divisors (2111652676).

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

1881224828 is a wasteful number, since it uses less digits than its factorization.

1881224828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9062 (or 9060 counting only the distinct ones).

The product of its digits is 131072, while the sum is 44.

The square root of 1881224828 is about 43373.0887532811. The cubic root of 1881224828 is about 1234.4691294713.

The spelling of 1881224828 in words is "one billion, eight hundred eighty-one million, two hundred twenty-four thousand, eight hundred twenty-eight".