20215741 has 8 divisors (see below), whose sum is σ = 24881024. Its totient is φ = 15994800.

The previous prime is 20215739. The next prime is 20215757. The reversal of 20215741 is 14751202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20215741 - 2¹ = 20215739 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215711) 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, 110985 + ... + 111166.

It is an arithmetic number, because the mean of its divisors is an integer number (3110128).

Almost surely, 2^20215741 is an apocalyptic number.

It is an amenable number.

20215741 is a deficient number, since it is larger than the sum of its proper divisors (4665283).

20215741 is a wasteful number, since it uses less digits than its factorization.

20215741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222171.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 20215741 is about 4496.1918330961. The cubic root of 20215741 is about 272.4142917054.

Adding to 20215741 its reverse (14751202), we get a palindrome (34966943).

The spelling of 20215741 in words is "twenty million, two hundred fifteen thousand, seven hundred forty-one".