20438034 has 16 divisors (see below), whose sum is σ = 43027680. Its totient is φ = 6454080.

The previous prime is 20438027. The next prime is 20438051. The reversal of 20438034 is 43083402.

It is a junction number, because it is equal to n+sod(n) for n = 20437995 and 20438013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89527 + ... + 89754.

It is an arithmetic number, because the mean of its divisors is an integer number (2689230).

Almost surely, 2^20438034 is an apocalyptic number.

20438034 is an abundant number, since it is smaller than the sum of its proper divisors (22589646).

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

20438034 is a wasteful number, since it uses less digits than its factorization.

20438034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179305.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 20438034 is about 4520.8443901554. The cubic root of 20438034 is about 273.4091464630.

The spelling of 20438034 in words is "twenty million, four hundred thirty-eight thousand, thirty-four".