20617102 has 16 divisors (see below), whose sum is σ = 33938352. Its totient is φ = 9315520.

The previous prime is 20617049. The next prime is 20617127. The reversal of 20617102 is 20171602.

It is a self number, because there is not a number n which added to its sum of digits gives 20617102.

It is a congruent 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, 1098 + ... + 6514.

It is an arithmetic number, because the mean of its divisors is an integer number (2121147).

Almost surely, 2^20617102 is an apocalyptic number.

20617102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20617102 is a deficient number, since it is larger than the sum of its proper divisors (13321250).

20617102 is a wasteful number, since it uses less digits than its factorization.

20617102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5603.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 20617102 is about 4540.6059067045. The cubic root of 20617102 is about 274.2053178982.

Adding to 20617102 its reverse (20171602), we get a palindrome (40788704).

The spelling of 20617102 in words is "twenty million, six hundred seventeen thousand, one hundred two".