20705702 has 4 divisors (see below), whose sum is σ = 31058556. Its totient is φ = 10352850.

The previous prime is 20705701. The next prime is 20705753. The reversal of 20705702 is 20750702.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20705701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5176424 + ... + 5176427.

It is an arithmetic number, because the mean of its divisors is an integer number (7764639).

Almost surely, 2^20705702 is an apocalyptic number.

20705702 is a deficient number, since it is larger than the sum of its proper divisors (10352854).

20705702 is a wasteful number, since it uses less digits than its factorization.

20705702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10352853.

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 20705702 is about 4550.3518545273. The cubic root of 20705702 is about 274.5975468480.

The spelling of 20705702 in words is "twenty million, seven hundred five thousand, seven hundred two".