1722221852 has 24 divisors (see below), whose sum is σ = 3249817200. Its totient is φ = 793869696.

The previous prime is 1722221843. The next prime is 1722221857. The reversal of 1722221852 is 2581222271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722221857) 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, 21599 + ... + 62537.

It is an arithmetic number, because the mean of its divisors is an integer number (135409050).

Almost surely, 2^1722221852 is an apocalyptic number.

It is an amenable number.

1722221852 is a deficient number, since it is larger than the sum of its proper divisors (1527595348).

1722221852 is a wasteful number, since it uses less digits than its factorization.

1722221852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41765 (or 41763 counting only the distinct ones).

The product of its digits is 8960, while the sum is 32.

The square root of 1722221852 is about 41499.6608660842. The cubic root of 1722221852 is about 1198.6609721335.

The spelling of 1722221852 in words is "one billion, seven hundred twenty-two million, two hundred twenty-one thousand, eight hundred fifty-two".