722547130 has 8 divisors (see below), whose sum is σ = 1300584852. Its totient is φ = 289018848.

The previous prime is 722547097. The next prime is 722547131. The reversal of 722547130 is 31745227.

It can be written as a sum of positive squares in 2 ways, for example, as 711769041 + 10778089 = 26679^2 + 3283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 722547092 and 722547101.

It is not an unprimeable number, because it can be changed into a prime (722547131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36127347 + ... + 36127366.

Almost surely, 2^722547130 is an apocalyptic number.

722547130 is a deficient number, since it is larger than the sum of its proper divisors (578037722).

722547130 is a wasteful number, since it uses less digits than its factorization.

722547130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72254720.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 722547130 is about 26880.2367921118. The cubic root of 722547130 is about 897.3366239707.

The spelling of 722547130 in words is "seven hundred twenty-two million, five hundred forty-seven thousand, one hundred thirty".