881378784 has 144 divisors (see below), whose sum is σ = 2944743984. Its totient is φ = 246528000.

The previous prime is 881378777. The next prime is 881378789. The reversal of 881378784 is 487873188.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-3 number, since 3×881378784³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 881378784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881378789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30484 + ... + 51884.

It is an arithmetic number, because the mean of its divisors is an integer number (20449611).

Almost surely, 2^881378784 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 881378784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472371992).

881378784 is an abundant number, since it is smaller than the sum of its proper divisors (2063365200).

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

881378784 is a wasteful number, since it uses less digits than its factorization.

881378784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21441 (or 21430 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 881378784 is about 29688.0242522132. The cubic root of 881378784 is about 958.7841900314.

The spelling of 881378784 in words is "eight hundred eighty-one million, three hundred seventy-eight thousand, seven hundred eighty-four".