20985414 has 16 divisors (see below), whose sum is σ = 42292800. Its totient is φ = 6941480.

The previous prime is 20985413. The next prime is 20985421. The reversal of 20985414 is 41458902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20985413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12564 + ... + 14135.

It is an arithmetic number, because the mean of its divisors is an integer number (2643300).

Almost surely, 2^20985414 is an apocalyptic number.

20985414 is an abundant number, since it is smaller than the sum of its proper divisors (21307386).

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

20985414 is a wasteful number, since it uses less digits than its factorization.

20985414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26835.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 20985414 is about 4580.9839554401. The cubic root of 20985414 is about 275.8285271801.

The spelling of 20985414 in words is "twenty million, nine hundred eighty-five thousand, four hundred fourteen".