20243434 has 16 divisors (see below), whose sum is σ = 31749120. Its totient is φ = 9668880.

The previous prime is 20243407. The next prime is 20243467. The reversal of 20243434 is 43434202.

It is a super-2 number, since 2×20243434² = 819593240224712, which contains 22 as substring.

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, 2832 + ... + 6964.

It is an arithmetic number, because the mean of its divisors is an integer number (1984320).

Almost surely, 2^20243434 is an apocalyptic number.

20243434 is a deficient number, since it is larger than the sum of its proper divisors (11505686).

20243434 is a wasteful number, since it uses less digits than its factorization.

20243434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4245.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 20243434 is about 4499.2703852958. The cubic root of 20243434 is about 272.5386259530.

Adding to 20243434 its reverse (43434202), we get a palindrome (63677636).

The spelling of 20243434 in words is "twenty million, two hundred forty-three thousand, four hundred thirty-four".