20733706 has 16 divisors (see below), whose sum is σ = 36215424. Its totient is φ = 8717904.

The previous prime is 20733703. The next prime is 20733709. The reversal of 20733706 is 60733702.

20733706 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (20733703) and next prime (20733709).

It is not an unprimeable number, because it can be changed into a prime (20733701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13230 + ... + 14713.

It is an arithmetic number, because the mean of its divisors is an integer number (2263464).

Almost surely, 2^20733706 is an apocalyptic number.

20733706 is a deficient number, since it is larger than the sum of its proper divisors (15481718).

20733706 is a wasteful number, since it uses less digits than its factorization.

20733706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28005.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 20733706 is about 4553.4279394759. The cubic root of 20733706 is about 274.7212867648.

The spelling of 20733706 in words is "twenty million, seven hundred thirty-three thousand, seven hundred six".