20441285 has 8 divisors (see below), whose sum is σ = 24723456. Its totient is φ = 16223760.

The previous prime is 20441269. The next prime is 20441347. The reversal of 20441285 is 58214402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20441285 - 2⁴ = 20441269 is a prime.

It is a super-2 number, since 2×20441285² = 835692264902450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15461 + ... + 16730.

It is an arithmetic number, because the mean of its divisors is an integer number (3090432).

Almost surely, 2^20441285 is an apocalyptic number.

It is an amenable number.

20441285 is a deficient number, since it is larger than the sum of its proper divisors (4282171).

20441285 is a wasteful number, since it uses less digits than its factorization.

20441285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32323.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 20441285 is about 4521.2039325826. The cubic root of 20441285 is about 273.4236424106.

Adding to 20441285 its reverse (58214402), we get a palindrome (78655687).

The spelling of 20441285 in words is "twenty million, four hundred forty-one thousand, two hundred eighty-five".