1720424484 has 81 divisors (see below), whose sum is σ = 4513902939. Its totient is φ = 552486960.

The previous prime is 1720424479. The next prime is 1720424513. The reversal of 1720424484 is 4844240271.

The square root of 1720424484 is 41478.

It is a perfect power (a square), and thus also a powerful number.

1720424484 is a `hidden beast` number, since 1 + 7 + 204 + 2 + 448 + 4 = 666.

It is a super-5 number, since 5×1720424484⁵ (a number of 47 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 in 26 ways as a sum of consecutive naturals, for example, 7714797 + ... + 7715019.

Almost surely, 2^1720424484 is an apocalyptic number.

1720424484 is the 41478-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1720424484

1720424484 is an abundant number, since it is smaller than the sum of its proper divisors (2793478455).

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

1720424484 is a wasteful number, since it uses less digits than its factorization.

1720424484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 36.

The cubic root of 1720424484 is about 1198.2438395040.

Multiplying 1720424484 by its sum of digits (36), we get a square (61935281424 = 248868²).

1720424484 divided by its sum of digits (36) gives a square (47789569 = 6913²).

The spelling of 1720424484 in words is "one billion, seven hundred twenty million, four hundred twenty-four thousand, four hundred eighty-four".