20740022 has 4 divisors (see below), whose sum is σ = 31110036. Its totient is φ = 10370010.

The previous prime is 20740021. The next prime is 20740063. The reversal of 20740022 is 22004702.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20740021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5185004 + ... + 5185007.

It is an arithmetic number, because the mean of its divisors is an integer number (7777509).

Almost surely, 2^20740022 is an apocalyptic number.

20740022 is a deficient number, since it is larger than the sum of its proper divisors (10370014).

20740022 is a wasteful number, since it uses less digits than its factorization.

20740022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10370013.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 20740022 is about 4554.1214300895. The cubic root of 20740022 is about 274.7491795671.

Adding to 20740022 its reverse (22004702), we get a palindrome (42744724).

The spelling of 20740022 in words is "twenty million, seven hundred forty thousand, twenty-two".