20306934 has 24 divisors (see below), whose sum is σ = 46314840. Its totient is φ = 6412608.

The previous prime is 20306911. The next prime is 20306941. The reversal of 20306934 is 43960302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20306898 and 20306907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29347 + ... + 30030.

It is an arithmetic number, because the mean of its divisors is an integer number (1929785).

Almost surely, 2^20306934 is an apocalyptic number.

20306934 is an abundant number, since it is smaller than the sum of its proper divisors (26007906).

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

20306934 is a wasteful number, since it uses less digits than its factorization.

20306934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59404 (or 59401 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 20306934 is about 4506.3215597647. The cubic root of 20306934 is about 272.8232966720.

The spelling of 20306934 in words is "twenty million, three hundred six thousand, nine hundred thirty-four".