20061836 has 36 divisors (see below), whose sum is σ = 38536344. Its totient is φ = 9106560.

The previous prime is 20061827. The next prime is 20061841. The reversal of 20061836 is 63816002.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 65195 + ... + 65501.

It is an arithmetic number, because the mean of its divisors is an integer number (1070454).

Almost surely, 2^20061836 is an apocalyptic number.

It is an amenable number.

20061836 is a deficient number, since it is larger than the sum of its proper divisors (18474508).

20061836 is a wasteful number, since it uses less digits than its factorization.

20061836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20061836 is about 4479.0440944469. The cubic root of 20061836 is about 271.7212217251.

Adding to 20061836 its reverse (63816002), we get a palindrome (83877838).

The spelling of 20061836 in words is "twenty million, sixty-one thousand, eight hundred thirty-six".