20272342 has 4 divisors (see below), whose sum is σ = 30408516. Its totient is φ = 10136170.

The previous prime is 20272339. The next prime is 20272379. The reversal of 20272342 is 24327202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24327202 = 2 ⋅12163601.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5068084 + ... + 5068087.

It is an arithmetic number, because the mean of its divisors is an integer number (7602129).

Almost surely, 2^20272342 is an apocalyptic number.

20272342 is a deficient number, since it is larger than the sum of its proper divisors (10136174).

20272342 is a wasteful number, since it uses less digits than its factorization.

20272342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10136173.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 20272342 is about 4502.4817600963. The cubic root of 20272342 is about 272.6682943240.

Adding to 20272342 its reverse (24327202), we get a palindrome (44599544).

The spelling of 20272342 in words is "twenty million, two hundred seventy-two thousand, three hundred forty-two".