722387212 has 24 divisors (see below), whose sum is σ = 1274192640. Its totient is φ = 358343040.

The previous prime is 722387189. The next prime is 722387219. The reversal of 722387212 is 212783227.

It is a happy number.

It is a super-2 number, since 2×722387212² = 1043686568122265888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (722387219) 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, 348114 + ... + 350182.

It is an arithmetic number, because the mean of its divisors is an integer number (53091360).

Almost surely, 2^722387212 is an apocalyptic number.

It is an amenable number.

722387212 is a deficient number, since it is larger than the sum of its proper divisors (551805428).

722387212 is a wasteful number, since it uses less digits than its factorization.

722387212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2719 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 722387212 is about 26877.2619885285. The cubic root of 722387212 is about 897.2704179705.

The spelling of 722387212 in words is "seven hundred twenty-two million, three hundred eighty-seven thousand, two hundred twelve".