20070530 has 8 divisors (see below), whose sum is σ = 36126972. Its totient is φ = 8028208.

The previous prime is 20070529. The next prime is 20070553. The reversal of 20070530 is 3507002.

It can be written as a sum of positive squares in 2 ways, for example, as 18671041 + 1399489 = 4321^2 + 1183^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20070499 and 20070508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003517 + ... + 1003536.

Almost surely, 2^20070530 is an apocalyptic number.

20070530 is a deficient number, since it is larger than the sum of its proper divisors (16056442).

20070530 is a wasteful number, since it uses less digits than its factorization.

20070530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007060.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 20070530 is about 4480.0145089051. The cubic root of 20070530 is about 271.7604671051.

Adding to 20070530 its reverse (3507002), we get a palindrome (23577532).

The spelling of 20070530 in words is "twenty million, seventy thousand, five hundred thirty".