20430452 has 24 divisors (see below), whose sum is σ = 41697600. Its totient is φ = 8755320.

The previous prime is 20430439. The next prime is 20430467. The reversal of 20430452 is 25403402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6074 + ... + 8817.

It is an arithmetic number, because the mean of its divisors is an integer number (1737400).

Almost surely, 2^20430452 is an apocalyptic number.

It is an amenable number.

20430452 is an abundant number, since it is smaller than the sum of its proper divisors (21267148).

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

20430452 is a wasteful number, since it uses less digits than its factorization.

20430452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14916 (or 14900 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20430452 is about 4520.0057522087. The cubic root of 20430452 is about 273.3753329605.

Adding to 20430452 its reverse (25403402), we get a palindrome (45833854).

The spelling of 20430452 in words is "twenty million, four hundred thirty thousand, four hundred fifty-two".