20020790 has 8 divisors (see below), whose sum is σ = 36037440. Its totient is φ = 8008312.

The previous prime is 20020753. The next prime is 20020799. The reversal of 20020790 is 9702002.

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

20020790 is a modest number, since divided by 20790 gives 20 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001030 + ... + 1001049.

It is an arithmetic number, because the mean of its divisors is an integer number (4504680).

Almost surely, 2^20020790 is an apocalyptic number.

20020790 is a deficient number, since it is larger than the sum of its proper divisors (16016650).

20020790 is a wasteful number, since it uses less digits than its factorization.

20020790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002086.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 20020790 is about 4474.4597439244. The cubic root of 20020790 is about 271.5357836588.

Adding to 20020790 its reverse (9702002), we get a palindrome (29722792).

The spelling of 20020790 in words is "twenty million, twenty thousand, seven hundred ninety".