20730102 has 64 divisors (see below), whose sum is σ = 46033920. Its totient is φ = 6200064.

The previous prime is 20730079. The next prime is 20730109. The reversal of 20730102 is 20103702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20730109) 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 31 ways as a sum of consecutive naturals, for example, 283938 + ... + 284010.

It is an arithmetic number, because the mean of its divisors is an integer number (719280).

Almost surely, 2^20730102 is an apocalyptic number.

20730102 is an abundant number, since it is smaller than the sum of its proper divisors (25303818).

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

20730102 is a wasteful number, since it uses less digits than its factorization.

20730102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20730102 is about 4553.0321764732. The cubic root of 20730102 is about 274.7053681942.

Adding to 20730102 its reverse (20103702), we get a palindrome (40833804).

The spelling of 20730102 in words is "twenty million, seven hundred thirty thousand, one hundred two".