20788254 has 24 divisors (see below), whose sum is σ = 45180720. Its totient is φ = 6907968.

The previous prime is 20788253. The next prime is 20788267. The reversal of 20788254 is 45288702.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20788253) 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, 4854 + ... + 8070.

It is an arithmetic number, because the mean of its divisors is an integer number (1882530).

Almost surely, 2^20788254 is an apocalyptic number.

20788254 is an abundant number, since it is smaller than the sum of its proper divisors (24392466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20788254 is a wasteful number, since it uses less digits than its factorization.

20788254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584 (or 3581 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 20788254 is about 4559.4137781079. The cubic root of 20788254 is about 274.9619958501.

It can be divided in two parts, 207882 and 54, that added together give a square (207936 = 456²).

The spelling of 20788254 in words is "twenty million, seven hundred eighty-eight thousand, two hundred fifty-four".