1722240836 has 12 divisors (see below), whose sum is σ = 3111144960. Its totient is φ = 833342280.

The previous prime is 1722240833. The next prime is 1722240847. The reversal of 1722240836 is 6380422271.

It is a super-2 number, since 2×1722240836² = 5932226994371957792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1722240796 and 1722240805.

It is not an unprimeable number, because it can be changed into a prime (1722240833) 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, 6944396 + ... + 6944643.

It is an arithmetic number, because the mean of its divisors is an integer number (259262080).

Almost surely, 2^1722240836 is an apocalyptic number.

It is an amenable number.

1722240836 is a deficient number, since it is larger than the sum of its proper divisors (1388904124).

1722240836 is a wasteful number, since it uses less digits than its factorization.

1722240836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13889074 (or 13889072 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 1722240836 is about 41499.8895902146. The cubic root of 1722240836 is about 1198.6653763853.

The spelling of 1722240836 in words is "one billion, seven hundred twenty-two million, two hundred forty thousand, eight hundred thirty-six".