881540720 has 40 divisors (see below), whose sum is σ = 2157458640. Its totient is φ = 334056960.

The previous prime is 881540717. The next prime is 881540731. The reversal of 881540720 is 27045188.

881540720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×881540720² = 1554228082036236800, which contains 22 as substring.

It is a congruent number.

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, 288461 + ... + 291500.

It is an arithmetic number, because the mean of its divisors is an integer number (53936466).

Almost surely, 2^881540720 is an apocalyptic number.

881540720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

881540720 is an abundant number, since it is smaller than the sum of its proper divisors (1275917920).

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

881540720 is a wasteful number, since it uses less digits than its factorization.

881540720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579993 (or 579987 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 881540720 is about 29690.7514219496. The cubic root of 881540720 is about 958.8429056754.

The spelling of 881540720 in words is "eight hundred eighty-one million, five hundred forty thousand, seven hundred twenty".