20893836 has 12 divisors (see below), whose sum is σ = 48752312. Its totient is φ = 6964608.

The previous prime is 20893811. The next prime is 20893849. The reversal of 20893836 is 63839802.

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

It is a junction number, because it is equal to n+sod(n) for n = 20893794 and 20893803.

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, 870565 + ... + 870588.

Almost surely, 2^20893836 is an apocalyptic number.

It is an amenable number.

20893836 is an abundant number, since it is smaller than the sum of its proper divisors (27858476).

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

20893836 is a wasteful number, since it uses less digits than its factorization.

20893836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741160 (or 1741158 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 20893836 is about 4570.9775759677. The cubic root of 20893836 is about 275.4267138399.

The spelling of 20893836 in words is "twenty million, eight hundred ninety-three thousand, eight hundred thirty-six".