20459450 has 24 divisors (see below), whose sum is σ = 41515200. Its totient is φ = 7439600.

The previous prime is 20459419. The next prime is 20459459. The reversal of 20459450 is 5495402.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20459459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18050 + ... + 19149.

It is an arithmetic number, because the mean of its divisors is an integer number (1729800).

Almost surely, 2^20459450 is an apocalyptic number.

20459450 is an abundant number, since it is smaller than the sum of its proper divisors (21055750).

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

20459450 is a wasteful number, since it uses less digits than its factorization.

20459450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37222 (or 37217 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 20459450 is about 4523.2123540687. The cubic root of 20459450 is about 273.5046104119.

The spelling of 20459450 in words is "twenty million, four hundred fifty-nine thousand, four hundred fifty".