1722056240 has 20 divisors (see below), whose sum is σ = 4003780944. Its totient is φ = 688822464.

The previous prime is 1722056173. The next prime is 1722056261. The reversal of 1722056240 is 426502271.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10762772 + ... + 10762931.

Almost surely, 2^1722056240 is an apocalyptic number.

1722056240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1722056240 is an abundant number, since it is smaller than the sum of its proper divisors (2281724704).

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

1722056240 is a wasteful number, since it uses less digits than its factorization.

1722056240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21525716 (or 21525710 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1722056240 is about 41497.6654765060. The cubic root of 1722056240 is about 1198.6225490921.

The spelling of 1722056240 in words is "one billion, seven hundred twenty-two million, fifty-six thousand, two hundred forty".