201720672 has 96 divisors (see below), whose sum is σ = 613992960. Its totient is φ = 64310400.

The previous prime is 201720667. The next prime is 201720677. The reversal of 201720672 is 276027102.

It is an interprime number because it is at equal distance from previous prime (201720667) and next prime (201720677).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201720677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14797 + ... + 24947.

It is an arithmetic number, because the mean of its divisors is an integer number (6395760).

Almost surely, 2^201720672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201720672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306996480).

201720672 is an abundant number, since it is smaller than the sum of its proper divisors (412272288).

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

201720672 is a wasteful number, since it uses less digits than its factorization.

201720672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10193 (or 10179 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 201720672 is about 14202.8402793244. The cubic root of 201720672 is about 586.4758527744.

Adding to 201720672 its reverse (276027102), we get a palindrome (477747774).

The spelling of 201720672 in words is "two hundred one million, seven hundred twenty thousand, six hundred seventy-two".