20380934 has 8 divisors (see below), whose sum is σ = 34938768. Its totient is φ = 8734680.

The previous prime is 20380907. The next prime is 20380937. The reversal of 20380934 is 43908302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20380897 and 20380906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727877 + ... + 727904.

It is an arithmetic number, because the mean of its divisors is an integer number (4367346).

Almost surely, 2^20380934 is an apocalyptic number.

20380934 is a deficient number, since it is larger than the sum of its proper divisors (14557834).

20380934 is a wasteful number, since it uses less digits than its factorization.

20380934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455790.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20380934 is about 4514.5247811924. The cubic root of 20380934 is about 273.1542911681.

The spelling of 20380934 in words is "twenty million, three hundred eighty thousand, nine hundred thirty-four".