20530046 has 8 divisors (see below), whose sum is σ = 31185120. Its totient is φ = 10135008.

The previous prime is 20530039. The next prime is 20530093. The reversal of 20530046 is 64003502.

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

It is a congruent number.

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, 64811 + ... + 65126.

It is an arithmetic number, because the mean of its divisors is an integer number (3898140).

Almost surely, 2^20530046 is an apocalyptic number.

20530046 is a deficient number, since it is larger than the sum of its proper divisors (10655074).

20530046 is a wasteful number, since it uses less digits than its factorization.

20530046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130018.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20530046 is about 4531.0093798181. The cubic root of 20530046 is about 273.8188281441.

Adding to 20530046 its reverse (64003502), we get a palindrome (84533548).

The spelling of 20530046 in words is "twenty million, five hundred thirty thousand, forty-six".