20741215 has 12 divisors (see below), whose sum is σ = 27358632. Its totient is φ = 15084080.

The previous prime is 20741197. The next prime is 20741243. The reversal of 20741215 is 51214702.

It is a happy number.

It is not a de Polignac number, because 20741215 - 2⁹ = 20740703 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 16537 + ... + 17746.

It is an arithmetic number, because the mean of its divisors is an integer number (2279886).

Almost surely, 2^20741215 is an apocalyptic number.

20741215 is a deficient number, since it is larger than the sum of its proper divisors (6617417).

20741215 is a wasteful number, since it uses less digits than its factorization.

20741215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34310 (or 34299 counting only the distinct ones).

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

The square root of 20741215 is about 4554.2524084640. The cubic root of 20741215 is about 274.7544474736.

Adding to 20741215 its reverse (51214702), we get a palindrome (71955917).

The spelling of 20741215 in words is "twenty million, seven hundred forty-one thousand, two hundred fifteen".