20170452 has 12 divisors (see below), whose sum is σ = 47064416. Its totient is φ = 6723480.

The previous prime is 20170433. The next prime is 20170477. The reversal of 20170452 is 25407102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 840424 + ... + 840447.

Almost surely, 2^20170452 is an apocalyptic number.

It is an amenable number.

20170452 is an abundant number, since it is smaller than the sum of its proper divisors (26893964).

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

20170452 is a wasteful number, since it uses less digits than its factorization.

20170452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680878 (or 1680876 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20170452 is about 4491.1526360167. The cubic root of 20170452 is about 272.2107111488.

Adding to 20170452 its reverse (25407102), we get a palindrome (45577554).

The spelling of 20170452 in words is "twenty million, one hundred seventy thousand, four hundred fifty-two".