723996140 has 48 divisors (see below), whose sum is σ = 1829049600. Its totient is φ = 235161792.

The previous prime is 723996137. The next prime is 723996157. The reversal of 723996140 is 41699327.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133430 + ... + 138749.

It is an arithmetic number, because the mean of its divisors is an integer number (38105200).

Almost surely, 2^723996140 is an apocalyptic number.

723996140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

723996140 is an abundant number, since it is smaller than the sum of its proper divisors (1105053460).

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

723996140 is a wasteful number, since it uses less digits than its factorization.

723996140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272214 (or 272212 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 723996140 is about 26907.1763661667. The cubic root of 723996140 is about 897.9360688478.

The spelling of 723996140 in words is "seven hundred twenty-three million, nine hundred ninety-six thousand, one hundred forty".