881121384 has 288 divisors, whose sum is σ = 2929024800. Its totient is φ = 236920320.

The previous prime is 881121359. The next prime is 881121403. The reversal of 881121384 is 483121188.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3881479 + ... + 3881705.

It is an arithmetic number, because the mean of its divisors is an integer number (10170225).

Almost surely, 2^881121384 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 881121384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464512400).

881121384 is an abundant number, since it is smaller than the sum of its proper divisors (2047903416).

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

881121384 is a wasteful number, since it uses less digits than its factorization.

881121384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 285 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 881121384 is about 29683.6888543186. The cubic root of 881121384 is about 958.6908457231.

It can be divided in two parts, 881 and 121384, that added together give a triangular number (122265 = T₄₉₄).

The spelling of 881121384 in words is "eight hundred eighty-one million, one hundred twenty-one thousand, three hundred eighty-four".