20437241 has 4 divisors (see below), whose sum is σ = 22295184. Its totient is φ = 18579300.

The previous prime is 20437237. The next prime is 20437273. The reversal of 20437241 is 14273402.

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 20437241 - 2² = 20437237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20437741) 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, 928955 + ... + 928976.

It is an arithmetic number, because the mean of its divisors is an integer number (5573796).

Almost surely, 2^20437241 is an apocalyptic number.

It is an amenable number.

20437241 is a deficient number, since it is larger than the sum of its proper divisors (1857943).

20437241 is a wasteful number, since it uses less digits than its factorization.

20437241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857942.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 20437241 is about 4520.7566844501. The cubic root of 20437241 is about 273.4056103066.

The spelling of 20437241 in words is "twenty million, four hundred thirty-seven thousand, two hundred forty-one".