20270427 has 8 divisors (see below), whose sum is σ = 27200016. Its totient is φ = 13427232.

The previous prime is 20270417. The next prime is 20270431. The reversal of 20270427 is 72407202.

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

It is not a de Polignac number, because 20270427 - 2¹¹ = 20268379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20270397 and 20270406.

It is not an unprimeable number, because it can be changed into a prime (20270417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21048 + ... + 21989.

It is an arithmetic number, because the mean of its divisors is an integer number (3400002).

Almost surely, 2^20270427 is an apocalyptic number.

20270427 is a deficient number, since it is larger than the sum of its proper divisors (6929589).

20270427 is a wasteful number, since it uses less digits than its factorization.

20270427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43197.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20270427 is about 4502.2690945789. The cubic root of 20270427 is about 272.6597083036.

Adding to 20270427 its reverse (72407202), we get a palindrome (92677629).

The spelling of 20270427 in words is "twenty million, two hundred seventy thousand, four hundred twenty-seven".