20746366 has 16 divisors (see below), whose sum is σ = 32860800. Its totient is φ = 9796248.

The previous prime is 20746351. The next prime is 20746367. The reversal of 20746366 is 66364702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20746367) 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, 15271 + ... + 16573.

It is an arithmetic number, because the mean of its divisors is an integer number (2053800).

Almost surely, 2^20746366 is an apocalyptic number.

20746366 is a deficient number, since it is larger than the sum of its proper divisors (12114434).

20746366 is a wasteful number, since it uses less digits than its factorization.

20746366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 20746366 is about 4554.8178887855. The cubic root of 20746366 is about 274.7771903235. Note that the first 3 decimals are identical.

It can be divided in two parts, 20746 and 366, that added together give a palindrome (21112).

The spelling of 20746366 in words is "twenty million, seven hundred forty-six thousand, three hundred sixty-six".