723236740 has 48 divisors (see below), whose sum is σ = 1549525824. Its totient is φ = 283478400.

The previous prime is 723236699. The next prime is 723236741. The reversal of 723236740 is 47632327.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 723236696 and 723236705.

It is not an unprimeable number, because it can be changed into a prime (723236741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373575 + ... + 375505.

It is an arithmetic number, because the mean of its divisors is an integer number (32281788).

Almost surely, 2^723236740 is an apocalyptic number.

It is an amenable number.

723236740 is an abundant number, since it is smaller than the sum of its proper divisors (826289084).

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

723236740 is a wasteful number, since it uses less digits than its factorization.

723236740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308 (or 2306 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 34.

The square root of 723236740 is about 26893.0611868564. The cubic root of 723236740 is about 897.6220104504.

The spelling of 723236740 in words is "seven hundred twenty-three million, two hundred thirty-six thousand, seven hundred forty".