720822740 has 48 divisors (see below), whose sum is σ = 1653813504. Its totient is φ = 261724800.

The previous prime is 720822689. The next prime is 720822761. The reversal of 720822740 is 47228027.

It is a happy number.

It is a super-2 number, since 2×720822740² = 1039170845002215200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 720822697 and 720822706.

It is a congruent number.

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, 173285 + ... + 177395.

It is an arithmetic number, because the mean of its divisors is an integer number (34454448).

Almost surely, 2^720822740 is an apocalyptic number.

It is an amenable number.

720822740 is an abundant number, since it is smaller than the sum of its proper divisors (932990764).

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

720822740 is a wasteful number, since it uses less digits than its factorization.

720822740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4928 (or 4926 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 720822740 is about 26848.1422076091. The cubic root of 720822740 is about 896.6222111122.

The spelling of 720822740 in words is "seven hundred twenty million, eight hundred twenty-two thousand, seven hundred forty".