1721013472 has 12 divisors (see below), whose sum is σ = 3388245336. Its totient is φ = 860506720.

The previous prime is 1721013461. The next prime is 1721013487. The reversal of 1721013472 is 2743101271.

It is a self number, because there is not a number n which added to its sum of digits gives 1721013472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26890804 + ... + 26890867.

It is an arithmetic number, because the mean of its divisors is an integer number (282353778).

Almost surely, 2^1721013472 is an apocalyptic number.

It is an amenable number.

1721013472 is a deficient number, since it is larger than the sum of its proper divisors (1667231864).

1721013472 is an equidigital number, since it uses as much as digits as its factorization.

1721013472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53781681 (or 53781673 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1721013472 is about 41485.0993972535. The cubic root of 1721013472 is about 1198.3805636529.

The spelling of 1721013472 in words is "one billion, seven hundred twenty-one million, thirteen thousand, four hundred seventy-two".