1721702052 has 36 divisors (see below), whose sum is σ = 4973806656. Its totient is φ = 491914800.

The previous prime is 1721702041. The next prime is 1721702071. The reversal of 1721702052 is 2502071271.

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

It is a super-2 number, since 2×1721702052² = 5928515911722021408, which contains 22 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, 3415824 + ... + 3416327.

It is an arithmetic number, because the mean of its divisors is an integer number (138161296).

Almost surely, 2^1721702052 is an apocalyptic number.

1721702052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1721702052 is an abundant number, since it is smaller than the sum of its proper divisors (3252104604).

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

1721702052 is a wasteful number, since it uses less digits than its factorization.

1721702052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6832168 (or 6832163 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 1721702052 is about 41493.3976916810. The cubic root of 1721702052 is about 1198.5403669460.

The spelling of 1721702052 in words is "one billion, seven hundred twenty-one million, seven hundred two thousand, fifty-two".