20530130 has 8 divisors (see below), whose sum is σ = 36954252. Its totient is φ = 8212048.

The previous prime is 20530129. The next prime is 20530151. The reversal of 20530130 is 3103502.

It can be written as a sum of positive squares in 2 ways, for example, as 20529961 + 169 = 4531^2 + 13^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026497 + ... + 1026516.

Almost surely, 2^20530130 is an apocalyptic number.

20530130 is a deficient number, since it is larger than the sum of its proper divisors (16424122).

20530130 is a wasteful number, since it uses less digits than its factorization.

20530130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053020.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 20530130 is about 4531.0186492664. The cubic root of 20530130 is about 273.8192015927.

Adding to 20530130 its reverse (3103502), we get a palindrome (23633632).

The spelling of 20530130 in words is "twenty million, five hundred thirty thousand, one hundred thirty".