20200836 has 12 divisors (see below), whose sum is σ = 47135312. Its totient is φ = 6733608.

The previous prime is 20200813. The next prime is 20200837. The reversal of 20200836 is 63800202.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20200837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841690 + ... + 841713.

Almost surely, 2^20200836 is an apocalyptic number.

It is an amenable number.

20200836 is an abundant number, since it is smaller than the sum of its proper divisors (26934476).

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

20200836 is a wasteful number, since it uses less digits than its factorization.

20200836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683410 (or 1683408 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20200836 is about 4494.5340136659. The cubic root of 20200836 is about 272.3473251879.

The spelling of 20200836 in words is "twenty million, two hundred thousand, eight hundred thirty-six".