722265240 has 64 divisors (see below), whose sum is σ = 2280844800. Its totient is φ = 182466432.

The previous prime is 722265223. The next prime is 722265287. The reversal of 722265240 is 42562227.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 722265198 and 722265207.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 156112 + ... + 160671.

It is an arithmetic number, because the mean of its divisors is an integer number (35638200).

Almost surely, 2^722265240 is an apocalyptic number.

It is an amenable number.

722265240 is an abundant number, since it is smaller than the sum of its proper divisors (1558579560).

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

722265240 is a wasteful number, since it uses less digits than its factorization.

722265240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316816 (or 316812 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 722265240 is about 26874.9928372083. The cubic root of 722265240 is about 897.2199150335.

The spelling of 722265240 in words is "seven hundred twenty-two million, two hundred sixty-five thousand, two hundred forty".