20740270 has 16 divisors (see below), whose sum is σ = 37966320. Its totient is φ = 8155264.

The previous prime is 20740261. The next prime is 20740297. The reversal of 20740270 is 7204702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16987 + ... + 18166.

It is an arithmetic number, because the mean of its divisors is an integer number (2372895).

Almost surely, 2^20740270 is an apocalyptic number.

20740270 is a deficient number, since it is larger than the sum of its proper divisors (17226050).

20740270 is a wasteful number, since it uses less digits than its factorization.

20740270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35219.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20740270 is about 4554.1486580919. The cubic root of 20740270 is about 274.7502746725.

Adding to 20740270 its reverse (7204702), we get a palindrome (27944972).

The spelling of 20740270 in words is "twenty million, seven hundred forty thousand, two hundred seventy".