20286536 has 16 divisors (see below), whose sum is σ = 38208240. Its totient is φ = 10097680.

The previous prime is 20286527. The next prime is 20286569. The reversal of 20286536 is 63568202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3770 + ... + 7401.

It is an arithmetic number, because the mean of its divisors is an integer number (2388015).

Almost surely, 2^20286536 is an apocalyptic number.

It is an amenable number.

20286536 is a deficient number, since it is larger than the sum of its proper divisors (17921704).

20286536 is a wasteful number, since it uses less digits than its factorization.

20286536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11404 (or 11400 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 20286536 is about 4504.0577260954. The cubic root of 20286536 is about 272.7319171465.

The spelling of 20286536 in words is "twenty million, two hundred eighty-six thousand, five hundred thirty-six".