1721241696 has 48 divisors (see below), whose sum is σ = 4551274224. Its totient is φ = 569554944.

The previous prime is 1721241689. The next prime is 1721241701. The reversal of 1721241696 is 6961421271.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52285 + ... + 78588.

It is an arithmetic number, because the mean of its divisors is an integer number (94818213).

Almost surely, 2^1721241696 is an apocalyptic number.

1721241696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1721241696 is an abundant number, since it is smaller than the sum of its proper divisors (2830032528).

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

1721241696 is a wasteful number, since it uses less digits than its factorization.

1721241696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131023 (or 131015 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 1721241696 is about 41487.8499804461. The cubic root of 1721241696 is about 1198.4335338206.

The spelling of 1721241696 in words is "one billion, seven hundred twenty-one million, two hundred forty-one thousand, six hundred ninety-six".