20708130 has 16 divisors (see below), whose sum is σ = 49699584. Its totient is φ = 5522160.

The previous prime is 20708101. The next prime is 20708137. The reversal of 20708130 is 3180702.

It is a junction number, because it is equal to n+sod(n) for n = 20708097 and 20708106.

It is not an unprimeable number, because it can be changed into a prime (20708137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345106 + ... + 345165.

It is an arithmetic number, because the mean of its divisors is an integer number (3106224).

Almost surely, 2^20708130 is an apocalyptic number.

20708130 is an abundant number, since it is smaller than the sum of its proper divisors (28991454).

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

20708130 is a wasteful number, since it uses less digits than its factorization.

20708130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690281.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20708130 is about 4550.6186392621. The cubic root of 20708130 is about 274.6082797496.

Adding to 20708130 its reverse (3180702), we get a palindrome (23888832).

The spelling of 20708130 in words is "twenty million, seven hundred eight thousand, one hundred thirty".