20005970 has 8 divisors (see below), whose sum is σ = 36010764. Its totient is φ = 8002384.

The previous prime is 20005949. The next prime is 20005981. The reversal of 20005970 is 7950002.

It can be written as a sum of positive squares in 2 ways, for example, as 19989841 + 16129 = 4471^2 + 127^2 .

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, 1000289 + ... + 1000308.

Almost surely, 2^20005970 is an apocalyptic number.

20005970 is a deficient number, since it is larger than the sum of its proper divisors (16004794).

20005970 is a wasteful number, since it uses less digits than its factorization.

20005970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000604.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 20005970 is about 4472.8033714886. The cubic root of 20005970 is about 271.4687674279.

Adding to 20005970 its reverse (7950002), we get a palindrome (27955972).

The spelling of 20005970 in words is "twenty million, five thousand, nine hundred seventy".