20705346 has 24 divisors (see below), whose sum is σ = 45405360. Its totient is φ = 6818136.

The previous prime is 20705323. The next prime is 20705357. The reversal of 20705346 is 64350702.

It is a happy number.

It is a super-2 number, since 2×20705346² = 857422705959432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5436 + ... + 8423.

It is an arithmetic number, because the mean of its divisors is an integer number (1891890).

Almost surely, 2^20705346 is an apocalyptic number.

20705346 is an abundant number, since it is smaller than the sum of its proper divisors (24700014).

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

20705346 is a wasteful number, since it uses less digits than its factorization.

20705346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13950 (or 13947 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20705346 is about 4550.3127365050. The cubic root of 20705346 is about 274.5959730901.

The spelling of 20705346 in words is "twenty million, seven hundred five thousand, three hundred forty-six".