20885016 has 32 divisors (see below), whose sum is σ = 52374960. Its totient is φ = 6940032.

The previous prime is 20885003. The next prime is 20885069. The reversal of 20885016 is 61058802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7786 + ... + 10118.

Almost surely, 2^20885016 is an apocalyptic number.

It is an amenable number.

20885016 is an abundant number, since it is smaller than the sum of its proper divisors (31489944).

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

20885016 is a wasteful number, since it uses less digits than its factorization.

20885016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715 (or 2711 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 20885016 is about 4570.0126914485. The cubic root of 20885016 is about 275.3879527188.

The spelling of 20885016 in words is "twenty million, eight hundred eighty-five thousand, sixteen".