20045030 has 16 divisors (see below), whose sum is σ = 36849600. Its totient is φ = 7847232.

The previous prime is 20045017. The next prime is 20045063. The reversal of 20045030 is 3054002.

It is a junction number, because it is equal to n+sod(n) for n = 20044996 and 20045014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20855 + ... + 21794.

It is an arithmetic number, because the mean of its divisors is an integer number (2303100).

Almost surely, 2^20045030 is an apocalyptic number.

20045030 is a deficient number, since it is larger than the sum of its proper divisors (16804570).

20045030 is a wasteful number, since it uses less digits than its factorization.

20045030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42703.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 20045030 is about 4477.1676314384. The cubic root of 20045030 is about 271.6453260029.

Adding to 20045030 its reverse (3054002), we get a palindrome (23099032).

The spelling of 20045030 in words is "twenty million, forty-five thousand, thirty".