723880134 has 12 divisors (see below), whose sum is σ = 1568406996. Its totient is φ = 241293372.

The previous prime is 723880123. The next prime is 723880139. The reversal of 723880134 is 431088327.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723880139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20107764 + ... + 20107799.

It is an arithmetic number, because the mean of its divisors is an integer number (130700583).

Almost surely, 2^723880134 is an apocalyptic number.

723880134 is an abundant number, since it is smaller than the sum of its proper divisors (844526862).

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

723880134 is a wasteful number, since it uses less digits than its factorization.

723880134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40215571 (or 40215568 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 723880134 is about 26905.0206095442. The cubic root of 723880134 is about 897.8881074799. Note that the first 3 decimals are identical.

The spelling of 723880134 in words is "seven hundred twenty-three million, eight hundred eighty thousand, one hundred thirty-four".