20791254 has 32 divisors (see below), whose sum is σ = 45826560. Its totient is φ = 6236000.

The previous prime is 20791247. The next prime is 20791261. The reversal of 20791254 is 45219702.

It is an interprime number because it is at equal distance from previous prime (20791247) and next prime (20791261).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5107 + ... + 8225.

It is an arithmetic number, because the mean of its divisors is an integer number (1432080).

Almost surely, 2^20791254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20791254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22913280).

20791254 is an abundant number, since it is smaller than the sum of its proper divisors (25035306).

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

20791254 is a wasteful number, since it uses less digits than its factorization.

20791254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 20791254 is about 4559.7427559019. The cubic root of 20791254 is about 274.9752220100.

It can be divided in two parts, 2079 and 1254, that added together give a palindrome (3333).

The spelling of 20791254 in words is "twenty million, seven hundred ninety-one thousand, two hundred fifty-four".