722000000 has 168 divisors, whose sum is σ = 1897534305. Its totient is φ = 273600000.

The previous prime is 721999997. The next prime is 722000009. The reversal of 722000000 is 227.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 4 ways, for example, as 123121216 + 598878784 = 11096^2 + 24472^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=19000.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (722000009) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 37999991 + ... + 38000009.

Almost surely, 2^722000000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722000000

722000000 is an abundant number, since it is smaller than the sum of its proper divisors (1175534305).

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

722000000 is an frugal number, since it uses more digits than its factorization.

722000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 26 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 11.

The square root of 722000000 is about 26870.0576850888. The cubic root of 722000000 is about 897.1100718465.

Adding to 722000000 its reverse (227), we get a palindrome (722000227).

It can be divided in two parts, 72 and 2000000, that multiplied together give a square (144000000 = 12000²).

The spelling of 722000000 in words is "seven hundred twenty-two million", and thus it is an aban number.