20605084 has 12 divisors (see below), whose sum is σ = 36897784. Its totient is φ = 10062864.

The previous prime is 20605073. The next prime is 20605099. The reversal of 20605084 is 48050602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59727 + ... + 60070.

Almost surely, 2^20605084 is an apocalyptic number.

It is an amenable number.

20605084 is a deficient number, since it is larger than the sum of its proper divisors (16292700).

20605084 is a wasteful number, since it uses less digits than its factorization.

20605084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119844 (or 119842 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 20605084 is about 4539.2823221298. The cubic root of 20605084 is about 274.1520281580.

Adding to 20605084 its reverse (48050602), we get a palindrome (68655686).

The spelling of 20605084 in words is "twenty million, six hundred five thousand, eighty-four".