20417244 has 12 divisors (see below), whose sum is σ = 47640264. Its totient is φ = 6805744.

The previous prime is 20417227. The next prime is 20417269. The reversal of 20417244 is 44271402.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850707 + ... + 850730.

It is an arithmetic number, because the mean of its divisors is an integer number (3970022).

Almost surely, 2^20417244 is an apocalyptic number.

It is an amenable number.

20417244 is an abundant number, since it is smaller than the sum of its proper divisors (27223020).

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

20417244 is a wasteful number, since it uses less digits than its factorization.

20417244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701444 (or 1701442 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 20417244 is about 4518.5444559061. The cubic root of 20417244 is about 273.3164091577.

Adding to 20417244 its reverse (44271402), we get a palindrome (64688646).

The spelling of 20417244 in words is "twenty million, four hundred seventeen thousand, two hundred forty-four".