20499241 has 4 divisors (see below), whose sum is σ = 23427712. Its totient is φ = 17570772.

The previous prime is 20499239. The next prime is 20499247. The reversal of 20499241 is 14299402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20499241 - 2¹ = 20499239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20499247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1464225 + ... + 1464238.

It is an arithmetic number, because the mean of its divisors is an integer number (5856928).

Almost surely, 2^20499241 is an apocalyptic number.

It is an amenable number.

20499241 is a deficient number, since it is larger than the sum of its proper divisors (2928471).

20499241 is an equidigital number, since it uses as much as digits as its factorization.

20499241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928470.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20499241 is about 4527.6087507646. The cubic root of 20499241 is about 273.6818060226.

The spelling of 20499241 in words is "twenty million, four hundred ninety-nine thousand, two hundred forty-one".