20702241 has 24 divisors (see below), whose sum is σ = 34741824. Its totient is φ = 11633760.

The previous prime is 20702239. The next prime is 20702257. The reversal of 20702241 is 14220702.

It is not a de Polignac number, because 20702241 - 2¹ = 20702239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20702281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1150 + ... + 6536.

It is an arithmetic number, because the mean of its divisors is an integer number (1447576).

Almost surely, 2^20702241 is an apocalyptic number.

20702241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20702241 is a deficient number, since it is larger than the sum of its proper divisors (14039583).

20702241 is a wasteful number, since it uses less digits than its factorization.

20702241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461 (or 5458 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 20702241 is about 4549.9715383725. The cubic root of 20702241 is about 274.5822461502.

Adding to 20702241 its reverse (14220702), we get a palindrome (34922943).

The spelling of 20702241 in words is "twenty million, seven hundred two thousand, two hundred forty-one".