20427084 has 36 divisors (see below), whose sum is σ = 51773904. Its totient is φ = 6790752.

The previous prime is 20427067. The next prime is 20427089. The reversal of 20427084 is 48072402.

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

It is not an unprimeable number, because it can be changed into a prime (20427089) 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, 22854 + ... + 23730.

It is an arithmetic number, because the mean of its divisors is an integer number (1438164).

Almost surely, 2^20427084 is an apocalyptic number.

It is an amenable number.

20427084 is an abundant number, since it is smaller than the sum of its proper divisors (31346820).

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

20427084 is a wasteful number, since it uses less digits than its factorization.

20427084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 20427084 is about 4519.6331709554. The cubic root of 20427084 is about 273.3603099820.

Adding to 20427084 its reverse (48072402), we get a palindrome (68499486).

The spelling of 20427084 in words is "twenty million, four hundred twenty-seven thousand, eighty-four".