20845334 has 4 divisors (see below), whose sum is σ = 31268004. Its totient is φ = 10422666.

The previous prime is 20845333. The next prime is 20845339. The reversal of 20845334 is 43354802.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20845297 and 20845306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20845333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5211332 + ... + 5211335.

It is an arithmetic number, because the mean of its divisors is an integer number (7817001).

Almost surely, 2^20845334 is an apocalyptic number.

20845334 is a deficient number, since it is larger than the sum of its proper divisors (10422670).

20845334 is a wasteful number, since it uses less digits than its factorization.

20845334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10422669.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 20845334 is about 4565.6690637846. The cubic root of 20845334 is about 275.2134277042.

The spelling of 20845334 in words is "twenty million, eight hundred forty-five thousand, three hundred thirty-four".