20427086 has 4 divisors (see below), whose sum is σ = 30640632. Its totient is φ = 10213542.

The previous prime is 20427067. The next prime is 20427089. The reversal of 20427086 is 68072402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20427089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106770 + ... + 5106773.

It is an arithmetic number, because the mean of its divisors is an integer number (7660158).

Almost surely, 2^20427086 is an apocalyptic number.

20427086 is a deficient number, since it is larger than the sum of its proper divisors (10213546).

20427086 is a wasteful number, since it uses less digits than its factorization.

20427086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10213545.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 20427086 is about 4519.6333922122. The cubic root of 20427086 is about 273.3603189035.

Adding to 20427086 its reverse (68072402), we get a palindrome (88499488).

The spelling of 20427086 in words is "twenty million, four hundred twenty-seven thousand, eighty-six".