20043426 has 16 divisors (see below), whose sum is σ = 43170624. Its totient is φ = 6167184.

The previous prime is 20043409. The next prime is 20043433. The reversal of 20043426 is 62434002.

It is a Curzon 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, 128406 + ... + 128561.

It is an arithmetic number, because the mean of its divisors is an integer number (2698164).

Almost surely, 2^20043426 is an apocalyptic number.

20043426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20043426 is an abundant number, since it is smaller than the sum of its proper divisors (23127198).

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

20043426 is a wasteful number, since it uses less digits than its factorization.

20043426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256985.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20043426 is about 4476.9884967464. The cubic root of 20043426 is about 271.6380801382.

Adding to 20043426 its reverse (62434002), we get a palindrome (82477428).

The spelling of 20043426 in words is "twenty million, forty-three thousand, four hundred twenty-six".