20243450 has 48 divisors (see below), whose sum is σ = 40711680. Its totient is φ = 7465920.

The previous prime is 20243407. The next prime is 20243467. The reversal of 20243450 is 5434202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33047 + ... + 33653.

It is an arithmetic number, because the mean of its divisors is an integer number (848160).

Almost surely, 2^20243450 is an apocalyptic number.

20243450 is an abundant number, since it is smaller than the sum of its proper divisors (20468230).

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

20243450 is a wasteful number, since it uses less digits than its factorization.

20243450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 666 counting only the distinct ones).

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

The square root of 20243450 is about 4499.2721633615. The cubic root of 20243450 is about 272.5386977560.

Adding to 20243450 its reverse (5434202), we get a palindrome (25677652).

The spelling of 20243450 in words is "twenty million, two hundred forty-three thousand, four hundred fifty".