20730274 has 8 divisors (see below), whose sum is σ = 31381020. Its totient is φ = 10269936.

The previous prime is 20730271. The next prime is 20730277. The reversal of 20730274 is 47203702.

It is an interprime number because it is at equal distance from previous prime (20730271) and next prime (20730277).

It can be written as a sum of positive squares in 2 ways, for example, as 19740249 + 990025 = 4443^2 + 995^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20730271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47329 + ... + 47764.

Almost surely, 2^20730274 is an apocalyptic number.

20730274 is a deficient number, since it is larger than the sum of its proper divisors (10650746).

20730274 is a wasteful number, since it uses less digits than its factorization.

20730274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95204.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 20730274 is about 4553.0510649454. The cubic root of 20730274 is about 274.7061279459.

Adding to 20730274 its reverse (47203702), we get a palindrome (67933976).

The spelling of 20730274 in words is "twenty million, seven hundred thirty thousand, two hundred seventy-four".