20272474 has 8 divisors (see below), whose sum is σ = 30688020. Its totient is φ = 10043136.

The previous prime is 20272471. The next prime is 20272489. The reversal of 20272474 is 47427202.

It can be written as a sum of positive squares in 2 ways, for example, as 18966025 + 1306449 = 4355^2 + 1143^2 .

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

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20272471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46279 + ... + 46714.

Almost surely, 2^20272474 is an apocalyptic number.

20272474 is a deficient number, since it is larger than the sum of its proper divisors (10415546).

20272474 is a wasteful number, since it uses less digits than its factorization.

20272474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93104.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 20272474 is about 4502.4964186549. The cubic root of 20272474 is about 272.6688861342.

Subtracting from 20272474 its product of nonzero digits (6272), we obtain a palindrome (20266202).

Adding to 20272474 its reverse (47427202), we get a palindrome (67699676).

The spelling of 20272474 in words is "twenty million, two hundred seventy-two thousand, four hundred seventy-four".