20418084 has 36 divisors (see below), whose sum is σ = 54330640. Its totient is φ = 6447600.

The previous prime is 20418031. The next prime is 20418121. The reversal of 20418084 is 48081402.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14242 + ... + 15609.

Almost surely, 2^20418084 is an apocalyptic number.

It is an amenable number.

20418084 is an abundant number, since it is smaller than the sum of its proper divisors (33912556).

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

20418084 is a wasteful number, since it uses less digits than its factorization.

20418084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29880 (or 29875 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 20418084 is about 4518.6374052362. The cubic root of 20418084 is about 273.3201573396.

Adding to 20418084 its reverse (48081402), we get a palindrome (68499486).

The spelling of 20418084 in words is "twenty million, four hundred eighteen thousand, eighty-four".