20213241 has 8 divisors (see below), whose sum is σ = 27145440. Its totient is φ = 13378272.

The previous prime is 20213233. The next prime is 20213257. The reversal of 20213241 is 14231202.

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

It is not a de Polignac number, because 20213241 - 2³ = 20213233 is a prime.

It is a super-2 number, since 2×20213241² = 817150223448162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20213241.

It is not an unprimeable number, because it can be changed into a prime (20211241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23820 + ... + 24653.

It is an arithmetic number, because the mean of its divisors is an integer number (3393180).

Almost surely, 2^20213241 is an apocalyptic number.

It is an amenable number.

20213241 is a deficient number, since it is larger than the sum of its proper divisors (6932199).

20213241 is a wasteful number, since it uses less digits than its factorization.

20213241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48615.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20213241 is about 4495.9138114515. The cubic root of 20213241 is about 272.4030617798.

Adding to 20213241 its reverse (14231202), we get a palindrome (34444443).

The spelling of 20213241 in words is "twenty million, two hundred thirteen thousand, two hundred forty-one".