20452122 has 32 divisors (see below), whose sum is σ = 48124800. Its totient is φ = 6416064.

The previous prime is 20452109. The next prime is 20452123. The reversal of 20452122 is 22125402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20452095 and 20452104.

It is not an unprimeable number, because it can be changed into a prime (20452123) 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, 10222 + ... + 12057.

It is an arithmetic number, because the mean of its divisors is an integer number (1503900).

Almost surely, 2^20452122 is an apocalyptic number.

20452122 is an abundant number, since it is smaller than the sum of its proper divisors (27672678).

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

20452122 is a wasteful number, since it uses less digits than its factorization.

20452122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22307 (or 22301 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 20452122 is about 4522.4022377493. The cubic root of 20452122 is about 273.4719526243.

Adding to 20452122 its reverse (22125402), we get a palindrome (42577524).

It can be divided in two parts, 204 and 52122, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 20452122 in words is "twenty million, four hundred fifty-two thousand, one hundred twenty-two".