20940084 has 36 divisors (see below), whose sum is σ = 57744960. Its totient is φ = 6345360.

The previous prime is 20940079. The next prime is 20940089. The reversal of 20940084 is 48004902.

It is an interprime number because it is at equal distance from previous prime (20940079) and next prime (20940089).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20940089) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 26044 + ... + 26835.

Almost surely, 2^20940084 is an apocalyptic number.

It is an amenable number.

20940084 is an abundant number, since it is smaller than the sum of its proper divisors (36804876).

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

20940084 is a wasteful number, since it uses less digits than its factorization.

20940084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52900 (or 52895 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20940084 is about 4576.0336537224. The cubic root of 20940084 is about 275.6297808725.

Adding to 20940084 its reverse (48004902), we get a palindrome (68944986).

The spelling of 20940084 in words is "twenty million, nine hundred forty thousand, eighty-four".