873742640 has 20 divisors (see below), whose sum is σ = 2031451824. Its totient is φ = 349497024.

The previous prime is 873742631. The next prime is 873742663. The reversal of 873742640 is 46247378.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5460812 + ... + 5460971.

Almost surely, 2^873742640 is an apocalyptic number.

873742640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

873742640 is an abundant number, since it is smaller than the sum of its proper divisors (1157709184).

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

873742640 is a wasteful number, since it uses less digits than its factorization.

873742640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10921796 (or 10921790 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 873742640 is about 29559.1380117892. The cubic root of 873742640 is about 956.0072302109.

The spelling of 873742640 in words is "eight hundred seventy-three million, seven hundred forty-two thousand, six hundred forty".