20441390 has 32 divisors (see below), whose sum is σ = 38232864. Its totient is φ = 7862400.

The previous prime is 20441363. The next prime is 20441401. The reversal of 20441390 is 9314402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37097 + ... + 37643.

It is an arithmetic number, because the mean of its divisors is an integer number (1194777).

Almost surely, 2^20441390 is an apocalyptic number.

20441390 is a deficient number, since it is larger than the sum of its proper divisors (17791474).

20441390 is a wasteful number, since it uses less digits than its factorization.

20441390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 20441390 is about 4521.2155445190. The cubic root of 20441390 is about 273.4241105716.

Adding to 20441390 its reverse (9314402), we get a palindrome (29755792).

The spelling of 20441390 in words is "twenty million, four hundred forty-one thousand, three hundred ninety".