20744206 has 24 divisors (see below), whose sum is σ = 37188144. Its totient is φ = 8500800.

The previous prime is 20744173. The next prime is 20744231. The reversal of 20744206 is 60244702.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 6006 + ... + 8806.

It is an arithmetic number, because the mean of its divisors is an integer number (1549506).

Almost surely, 2^20744206 is an apocalyptic number.

20744206 is a deficient number, since it is larger than the sum of its proper divisors (16443938).

20744206 is a wasteful number, since it uses less digits than its factorization.

20744206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856 (or 2833 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20744206 is about 4554.5807710480. The cubic root of 20744206 is about 274.7676538850.

Adding to 20744206 its reverse (60244702), we get a palindrome (80988908).

The spelling of 20744206 in words is "twenty million, seven hundred forty-four thousand, two hundred six".