4172212720 has 80 divisors (see below), whose sum is σ = 10496640672. Its totient is φ = 1533127680.

The previous prime is 4172212697. The next prime is 4172212721. The reversal of 4172212720 is 272122714.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4172212721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 209934 + ... + 228946.

Almost surely, 2^4172212720 is an apocalyptic number.

4172212720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4172212720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5248320336).

4172212720 is an abundant number, since it is smaller than the sum of its proper divisors (6324427952).

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

4172212720 is a wasteful number, since it uses less digits than its factorization.

4172212720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19250 (or 19244 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 4172212720 is about 64592.6676953352. The cubic root of 4172212720 is about 1609.8626118892.

The spelling of 4172212720 in words is "four billion, one hundred seventy-two million, two hundred twelve thousand, seven hundred twenty".