722651140 has 24 divisors (see below), whose sum is σ = 1542448152. Its totient is φ = 284321280.

The previous prime is 722651129. The next prime is 722651141. The reversal of 722651140 is 41156227.

It can be written as a sum of positive squares in 4 ways, for example, as 9216 + 722641924 = 96^2 + 26882^2 .

It is a junction number, because it is equal to n+sod(n) for n = 722651099 and 722651108.

It is not an unprimeable number, because it can be changed into a prime (722651141) 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, 294949 + ... + 297388.

It is an arithmetic number, because the mean of its divisors is an integer number (64268673).

Almost surely, 2^722651140 is an apocalyptic number.

It is an amenable number.

722651140 is an abundant number, since it is smaller than the sum of its proper divisors (819797012).

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

722651140 is a wasteful number, since it uses less digits than its factorization.

722651140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592407 (or 592405 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 722651140 is about 26882.1714152708. The cubic root of 722651140 is about 897.3796788342.

The spelling of 722651140 in words is "seven hundred twenty-two million, six hundred fifty-one thousand, one hundred forty".