881238540 has 144 divisors (see below), whose sum is σ = 3091247712. Its totient is φ = 185923584.

The previous prime is 881238539. The next prime is 881238551. The reversal of 881238540 is 45832188.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26692 + ... + 49748.

It is an arithmetic number, because the mean of its divisors is an integer number (21466998).

Almost surely, 2^881238540 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 881238540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1545623856).

881238540 is an abundant number, since it is smaller than the sum of its proper divisors (2210009172).

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

881238540 is a wasteful number, since it uses less digits than its factorization.

881238540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23096 (or 23087 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 881238540 is about 29685.6621957470. The cubic root of 881238540 is about 958.7333337802.

The spelling of 881238540 in words is "eight hundred eighty-one million, two hundred thirty-eight thousand, five hundred forty".