1722254220 has 36 divisors (see below), whose sum is σ = 5224171680. Its totient is φ = 459267744.

The previous prime is 1722254153. The next prime is 1722254231. The reversal of 1722254220 is 224522271.

1722254220 is a `hidden beast` number, since 17 + 2 + 225 + 422 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×1722254220⁴ (a number of 38 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4783860 + ... + 4784219.

It is an arithmetic number, because the mean of its divisors is an integer number (145115880).

Almost surely, 2^1722254220 is an apocalyptic number.

1722254220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1722254220 is an abundant number, since it is smaller than the sum of its proper divisors (3501917460).

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

1722254220 is a wasteful number, since it uses less digits than its factorization.

1722254220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9568094 (or 9568089 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 1722254220 is about 41500.0508433423. The cubic root of 1722254220 is about 1198.6684814284.

Adding to 1722254220 its reverse (224522271), we get a palindrome (1946776491).

The spelling of 1722254220 in words is "one billion, seven hundred twenty-two million, two hundred fifty-four thousand, two hundred twenty".