20545012 has 12 divisors (see below), whose sum is σ = 35985600. Its totient is φ = 10263416.

The previous prime is 20545001. The next prime is 20545037. The reversal of 20545012 is 21054502.

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, 7173 + ... + 9619.

It is an arithmetic number, because the mean of its divisors is an integer number (2998800).

Almost surely, 2^20545012 is an apocalyptic number.

It is an amenable number.

20545012 is a deficient number, since it is larger than the sum of its proper divisors (15440588).

20545012 is a wasteful number, since it uses less digits than its factorization.

20545012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4550 (or 4548 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 20545012 is about 4532.6605873372. The cubic root of 20545012 is about 273.8853481640.

Adding to 20545012 its reverse (21054502), we get a palindrome (41599514).

The spelling of 20545012 in words is "twenty million, five hundred forty-five thousand, twelve".