20171452 has 48 divisors (see below), whose sum is σ = 44126208. Its totient is φ = 7868160.

The previous prime is 20171449. The next prime is 20171453. The reversal of 20171452 is 25417102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20171453) 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, 14073 + ... + 15439.

It is an arithmetic number, because the mean of its divisors is an integer number (919296).

Almost surely, 2^20171452 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 20171452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22063104).

20171452 is an abundant number, since it is smaller than the sum of its proper divisors (23954756).

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

20171452 is a wasteful number, since it uses less digits than its factorization.

20171452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 20171452 is about 4491.2639646318. The cubic root of 20171452 is about 272.2152095807.

Adding to 20171452 its reverse (25417102), we get a palindrome (45588554).

The spelling of 20171452 in words is "twenty million, one hundred seventy-one thousand, four hundred fifty-two".