20834934 has 24 divisors (see below), whose sum is σ = 43166760. Its totient is φ = 6703872.

The previous prime is 20834927. The next prime is 20834939. The reversal of 20834934 is 43943802.

It is a junction number, because it is equal to n+sod(n) for n = 20834895 and 20834904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20834939) 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, 2982 + ... + 7110.

It is an arithmetic number, because the mean of its divisors is an integer number (1798615).

Almost surely, 2^20834934 is an apocalyptic number.

20834934 is an abundant number, since it is smaller than the sum of its proper divisors (22331826).

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

20834934 is a wasteful number, since it uses less digits than its factorization.

20834934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192 (or 4163 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 20834934 is about 4564.5299867566. The cubic root of 20834934 is about 275.1676509406.

The spelling of 20834934 in words is "twenty million, eight hundred thirty-four thousand, nine hundred thirty-four".