881172864 has 256 divisors, whose sum is σ = 3057062400. Its totient is φ = 246343680.

The previous prime is 881172857. The next prime is 881172893. The reversal of 881172864 is 468271188.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 493317 + ... + 495099.

It is an arithmetic number, because the mean of its divisors is an integer number (11941650).

Almost surely, 2^881172864 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 881172864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1528531200).

881172864 is an abundant number, since it is smaller than the sum of its proper divisors (2175889536).

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

881172864 is a wasteful number, since it uses less digits than its factorization.

881172864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1812 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 881172864 is about 29684.5559845520. Note that the first 3 decimals coincide. The cubic root of 881172864 is about 958.7095160389.

The spelling of 881172864 in words is "eight hundred eighty-one million, one hundred seventy-two thousand, eight hundred sixty-four".