20439084 has 24 divisors (see below), whose sum is σ = 49336560. Its totient is φ = 6577984.

The previous prime is 20439077. The next prime is 20439103. The reversal of 20439084 is 48093402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29019 + ... + 29714.

It is an arithmetic number, because the mean of its divisors is an integer number (2055690).

Almost surely, 2^20439084 is an apocalyptic number.

It is an amenable number.

20439084 is an abundant number, since it is smaller than the sum of its proper divisors (28897476).

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

20439084 is a wasteful number, since it uses less digits than its factorization.

20439084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58769 (or 58767 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20439084 is about 4520.9605174122. The cubic root of 20439084 is about 273.4138284967.

The spelling of 20439084 in words is "twenty million, four hundred thirty-nine thousand, eighty-four".