20009130 has 64 divisors (see below), whose sum is σ = 50371200. Its totient is φ = 5080320.

The previous prime is 20009117. The next prime is 20009137. The reversal of 20009130 is 3190002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20009137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94725 + ... + 94935.

It is an arithmetic number, because the mean of its divisors is an integer number (787050).

Almost surely, 2^20009130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20009130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25185600).

20009130 is an abundant number, since it is smaller than the sum of its proper divisors (30362070).

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

20009130 is a wasteful number, since it uses less digits than its factorization.

20009130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 20009130 is about 4473.1566035631. The cubic root of 20009130 is about 271.4830597640.

Adding to 20009130 its reverse (3190002), we get a palindrome (23199132).

The spelling of 20009130 in words is "twenty million, nine thousand, one hundred thirty".