20275286 has 4 divisors (see below), whose sum is σ = 30412932. Its totient is φ = 10137642.

The previous prime is 20275267. The next prime is 20275289. The reversal of 20275286 is 68257202.

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

It is a super-2 number, since 2×20275286² = 822174444763592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20275289) 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 as a sum of consecutive naturals, namely, 5068820 + ... + 5068823.

It is an arithmetic number, because the mean of its divisors is an integer number (7603233).

Almost surely, 2^20275286 is an apocalyptic number.

20275286 is a deficient number, since it is larger than the sum of its proper divisors (10137646).

20275286 is a wasteful number, since it uses less digits than its factorization.

20275286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10137645.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 20275286 is about 4502.8086790358. The cubic root of 20275286 is about 272.6814928748.

The spelling of 20275286 in words is "twenty million, two hundred seventy-five thousand, two hundred eighty-six".