722145740 has 12 divisors (see below), whose sum is σ = 1516506096. Its totient is φ = 288858288.

The previous prime is 722145731. The next prime is 722145763. The reversal of 722145740 is 47541227.

It is a junction number, because it is equal to n+sod(n) for n = 722145697 and 722145706.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 18053624 + ... + 18053663.

It is an arithmetic number, because the mean of its divisors is an integer number (126375508).

Almost surely, 2^722145740 is an apocalyptic number.

It is an amenable number.

722145740 is an abundant number, since it is smaller than the sum of its proper divisors (794360356).

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

722145740 is a wasteful number, since it uses less digits than its factorization.

722145740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36107296 (or 36107294 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 722145740 is about 26872.7694888339. The cubic root of 722145740 is about 897.1704301224.

Adding to 722145740 its reverse (47541227), we get a palindrome (769686967).

The spelling of 722145740 in words is "seven hundred twenty-two million, one hundred forty-five thousand, seven hundred forty".