881645244 has 12 divisors (see below), whose sum is σ = 2057172264. Its totient is φ = 293881744.

The previous prime is 881645243. The next prime is 881645267. The reversal of 881645244 is 442546188.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 881645196 and 881645205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881645243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36735207 + ... + 36735230.

It is an arithmetic number, because the mean of its divisors is an integer number (171431022).

Almost surely, 2^881645244 is an apocalyptic number.

It is an amenable number.

881645244 is an abundant number, since it is smaller than the sum of its proper divisors (1175527020).

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

881645244 is a wasteful number, since it uses less digits than its factorization.

881645244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73470444 (or 73470442 counting only the distinct ones).

The product of its digits is 245760, while the sum is 42.

The square root of 881645244 is about 29692.5115812051. The cubic root of 881645244 is about 958.8808007428.

The spelling of 881645244 in words is "eight hundred eighty-one million, six hundred forty-five thousand, two hundred forty-four".