20286388427 has 8 divisors (see below), whose sum is σ = 20402986032. Its totient is φ = 20169928800.

The previous prime is 20286388403. The next prime is 20286388429. The reversal of 20286388427 is 72488368202.

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

It is a cyclic number.

It is not a de Polignac number, because 20286388427 - 2¹⁰ = 20286387403 is a prime.

It is a super-2 number, since 2×20286388427² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20286388429) 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, 267977 + ... + 335237.

It is an arithmetic number, because the mean of its divisors is an integer number (2550373254).

Almost surely, 2^20286388427 is an apocalyptic number.

20286388427 is a deficient number, since it is larger than the sum of its proper divisors (116597605).

20286388427 is a wasteful number, since it uses less digits than its factorization.

20286388427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68989.

The product of its (nonzero) digits is 2064384, while the sum is 50.

The spelling of 20286388427 in words is "twenty billion, two hundred eighty-six million, three hundred eighty-eight thousand, four hundred twenty-seven".