20010045 has 32 divisors (see below), whose sum is σ = 35178624. Its totient is φ = 9632000.

The previous prime is 20010041. The next prime is 20010061. The reversal of 20010045 is 54001002.

It is not a de Polignac number, because 20010045 - 2² = 20010041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20010045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28195 + ... + 28895.

It is an arithmetic number, because the mean of its divisors is an integer number (1099332).

Almost surely, 2^20010045 is an apocalyptic number.

It is an amenable number.

20010045 is a deficient number, since it is larger than the sum of its proper divisors (15168579).

20010045 is a wasteful number, since it uses less digits than its factorization.

20010045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 20010045 is about 4473.2588791618. The cubic root of 20010045 is about 271.4871979285.

Adding to 20010045 its reverse (54001002), we get a palindrome (74011047).

The spelling of 20010045 in words is "twenty million, ten thousand, forty-five".