20739084 has 12 divisors (see below), whose sum is σ = 48391224. Its totient is φ = 6913024.

The previous prime is 20739083. The next prime is 20739101. The reversal of 20739084 is 48093702.

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

It is not an unprimeable number, because it can be changed into a prime (20739083) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 864117 + ... + 864140.

It is an arithmetic number, because the mean of its divisors is an integer number (4032602).

Almost surely, 2^20739084 is an apocalyptic number.

It is an amenable number.

20739084 is an abundant number, since it is smaller than the sum of its proper divisors (27652140).

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

20739084 is a wasteful number, since it uses less digits than its factorization.

20739084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728264 (or 1728262 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20739084 is about 4554.0184452854. The cubic root of 20739084 is about 274.7450375173.

The spelling of 20739084 in words is "twenty million, seven hundred thirty-nine thousand, eighty-four".