20286888 has 16 divisors (see below), whose sum is σ = 50717280. Its totient is φ = 6762288.

The previous prime is 20286887. The next prime is 20286907. The reversal of 20286888 is 88868202.

It is not an unprimeable number, because it can be changed into a prime (20286883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422620 + ... + 422667.

It is an arithmetic number, because the mean of its divisors is an integer number (3169830).

Almost surely, 2^20286888 is an apocalyptic number.

It is an amenable number.

20286888 is an abundant number, since it is smaller than the sum of its proper divisors (30430392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20286888 is a wasteful number, since it uses less digits than its factorization.

20286888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845296 (or 845292 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The square root of 20286888 is about 4504.0968018017. The cubic root of 20286888 is about 272.7334945651.

The spelling of 20286888 in words is "twenty million, two hundred eighty-six thousand, eight hundred eighty-eight".