20287926 has 24 divisors (see below), whose sum is σ = 44894304. Its totient is φ = 6618480.

The previous prime is 20287921. The next prime is 20287931. The reversal of 20287926 is 62978202.

It is an interprime number because it is at equal distance from previous prime (20287921) and next prime (20287931).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20287921) 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, 11145 + ... + 12836.

It is an arithmetic number, because the mean of its divisors is an integer number (1870596).

Almost surely, 2^20287926 is an apocalyptic number.

20287926 is an abundant number, since it is smaller than the sum of its proper divisors (24606378).

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

20287926 is a wasteful number, since it uses less digits than its factorization.

20287926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24036 (or 24033 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 20287926 is about 4504.2120287571. The cubic root of 20287926 is about 272.7381460513.

The spelling of 20287926 in words is "twenty million, two hundred eighty-seven thousand, nine hundred twenty-six".