881787940 has 48 divisors (see below), whose sum is σ = 2053243584. Its totient is φ = 315388800.

The previous prime is 881787931. The next prime is 881787947. The reversal of 881787940 is 49787188.

It is a super-2 number, since 2×881787940² = 1555099942258887200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (881787947) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19434 + ... + 46273.

It is an arithmetic number, because the mean of its divisors is an integer number (42775908).

Almost surely, 2^881787940 is an apocalyptic number.

It is an amenable number.

881787940 is an abundant number, since it is smaller than the sum of its proper divisors (1171455644).

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

881787940 is a wasteful number, since it uses less digits than its factorization.

881787940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65788 (or 65786 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 881787940 is about 29694.9143794017. The cubic root of 881787940 is about 958.9325301939.

The spelling of 881787940 in words is "eight hundred eighty-one million, seven hundred eighty-seven thousand, nine hundred forty".