20286207 has 20 divisors (see below), whose sum is σ = 31624560. Its totient is φ = 12934944.

The previous prime is 20286199. The next prime is 20286223. The reversal of 20286207 is 70268202.

It is not a de Polignac number, because 20286207 - 2³ = 20286199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20286257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3582 + ... + 7307.

It is an arithmetic number, because the mean of its divisors is an integer number (1581228).

Almost surely, 2^20286207 is an apocalyptic number.

20286207 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20286207 is a deficient number, since it is larger than the sum of its proper divisors (11338353).

20286207 is a wasteful number, since it uses less digits than its factorization.

20286207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10924 (or 10915 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20286207 is about 4504.0212033249. The cubic root of 20286207 is about 272.7304427813.

The spelling of 20286207 in words is "twenty million, two hundred eighty-six thousand, two hundred seven".