20750774 has 24 divisors (see below), whose sum is σ = 36021720. Its totient is φ = 8933760.

The previous prime is 20750767. The next prime is 20750777. The reversal of 20750774 is 47705702.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20750774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20750777) 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 11 ways as a sum of consecutive naturals, for example, 2342 + ... + 6854.

It is an arithmetic number, because the mean of its divisors is an integer number (1500905).

Almost surely, 2^20750774 is an apocalyptic number.

20750774 is a deficient number, since it is larger than the sum of its proper divisors (15270946).

20750774 is a wasteful number, since it uses less digits than its factorization.

20750774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556 (or 4545 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 20750774 is about 4555.3017463171. The cubic root of 20750774 is about 274.7966496685.

The spelling of 20750774 in words is "twenty million, seven hundred fifty thousand, seven hundred seventy-four".