20717084 has 12 divisors (see below), whose sum is σ = 38387664. Its totient is φ = 9749184.

The previous prime is 20717063. The next prime is 20717093. The reversal of 20717084 is 48071702.

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, 152264 + ... + 152399.

It is an arithmetic number, because the mean of its divisors is an integer number (3198972).

Almost surely, 2^20717084 is an apocalyptic number.

It is an amenable number.

20717084 is a deficient number, since it is larger than the sum of its proper divisors (17670580).

20717084 is a wasteful number, since it uses less digits than its factorization.

20717084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304684 (or 304682 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 20717084 is about 4551.6023552151. The cubic root of 20717084 is about 274.6478533893.

Adding to 20717084 its reverse (48071702), we get a palindrome (68788786).

The spelling of 20717084 in words is "twenty million, seven hundred seventeen thousand, eighty-four".