20730162 has 16 divisors (see below), whose sum is σ = 41552640. Its totient is φ = 6894672.

The previous prime is 20730131. The next prime is 20730167. The reversal of 20730162 is 26103702.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20730167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733 + ... + 6480.

It is an arithmetic number, because the mean of its divisors is an integer number (2597040).

Almost surely, 2^20730162 is an apocalyptic number.

20730162 is an abundant number, since it is smaller than the sum of its proper divisors (20822478).

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

20730162 is a wasteful number, since it uses less digits than its factorization.

20730162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7697.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20730162 is about 4553.0387654840. The cubic root of 20730162 is about 274.7056332243.

Adding to 20730162 its reverse (26103702), we get a palindrome (46833864).

The spelling of 20730162 in words is "twenty million, seven hundred thirty thousand, one hundred sixty-two".