722537440 has 48 divisors (see below), whose sum is σ = 1709164800. Its totient is φ = 288647680.

The previous prime is 722537411. The next prime is 722537449. The reversal of 722537440 is 44735227.

It is a junction number, because it is equal to n+sod(n) for n = 722537396 and 722537405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722537449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148161 + ... + 152959.

It is an arithmetic number, because the mean of its divisors is an integer number (35607600).

Almost surely, 2^722537440 is an apocalyptic number.

It is an amenable number.

722537440 is an abundant number, since it is smaller than the sum of its proper divisors (986627360).

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

722537440 is a wasteful number, since it uses less digits than its factorization.

722537440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755 (or 5747 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 722537440 is about 26880.0565475596. The cubic root of 722537440 is about 897.3326125919.

The spelling of 722537440 in words is "seven hundred twenty-two million, five hundred thirty-seven thousand, four hundred forty".