723071340 has 96 divisors (see below), whose sum is σ = 2253672960. Its totient is φ = 192466368.

The previous prime is 723071329. The next prime is 723071347. The reversal of 723071340 is 43170327.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (723071347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443607 + ... + 445233.

It is an arithmetic number, because the mean of its divisors is an integer number (23475760).

Almost surely, 2^723071340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 723071340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1126836480).

723071340 is an abundant number, since it is smaller than the sum of its proper divisors (1530601620).

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

723071340 is a wasteful number, since it uses less digits than its factorization.

723071340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468 (or 2460 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 723071340 is about 26889.9858683488. The cubic root of 723071340 is about 897.5535782707.

The spelling of 723071340 in words is "seven hundred twenty-three million, seventy-one thousand, three hundred forty".