881540 has 24 divisors (see below), whose sum is σ = 2020032. Its totient is φ = 320480.

The previous prime is 881539. The next prime is 881591. The reversal of 881540 is 45188.

881540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×881540² = 1554225543200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1784 + ... + 2223.

It is an arithmetic number, because the mean of its divisors is an integer number (84168).

2⁸⁸¹⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

881540 is an abundant number, since it is smaller than the sum of its proper divisors (1138492).

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

881540 is a wasteful number, since it uses less digits than its factorization.

881540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027 (or 4025 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 881540 is about 938.9036159266. The cubic root of 881540 is about 95.8842644630.

The spelling of 881540 in words is "eight hundred eighty-one thousand, five hundred forty".