20139334 has 8 divisors (see below), whose sum is σ = 30520728. Its totient is φ = 9965760.

The previous prime is 20139331. The next prime is 20139349. The reversal of 20139334 is 43393102.

It is a happy number.

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 = 20139299 and 20139308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20139331) 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, 51712 + ... + 52099.

It is an arithmetic number, because the mean of its divisors is an integer number (3815091).

Almost surely, 2^20139334 is an apocalyptic number.

20139334 is a deficient number, since it is larger than the sum of its proper divisors (10381394).

20139334 is a wasteful number, since it uses less digits than its factorization.

20139334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103910.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 20139334 is about 4487.6869320397. The cubic root of 20139334 is about 272.0706545835.

The spelling of 20139334 in words is "twenty million, one hundred thirty-nine thousand, three hundred thirty-four".