20734306 has 8 divisors (see below), whose sum is σ = 31121964. Its totient is φ = 10360320.

The previous prime is 20734303. The next prime is 20734309. The reversal of 20734306 is 60343702.

It is an interprime number because it is at equal distance from previous prime (20734303) and next prime (20734309).

It can be written as a sum of positive squares in 2 ways, for example, as 20331081 + 403225 = 4509^2 + 635^2 .

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

It is a super-2 number, since 2×20734306² = 859822890603272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20734303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2266 + ... + 6826.

Almost surely, 2^20734306 is an apocalyptic number.

20734306 is a deficient number, since it is larger than the sum of its proper divisors (10387658).

20734306 is a wasteful number, since it uses less digits than its factorization.

20734306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6836.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 20734306 is about 4553.4938234283. The cubic root of 20734306 is about 274.7239367362.

The spelling of 20734306 in words is "twenty million, seven hundred thirty-four thousand, three hundred six".