20545112 has 48 divisors (see below), whose sum is σ = 47462760. Its totient is φ = 8284416.

The previous prime is 20545097. The next prime is 20545127. The reversal of 20545112 is 21154502.

It is an interprime number because it is at equal distance from previous prime (20545097) and next prime (20545127).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5123 + ... + 8205.

Almost surely, 2^20545112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20545112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23731380).

20545112 is an abundant number, since it is smaller than the sum of its proper divisors (26917648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20545112 is a wasteful number, since it uses less digits than its factorization.

20545112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120 (or 3109 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 20545112 is about 4532.6716183725. The cubic root of 20545112 is about 273.8857925296.

Adding to 20545112 its reverse (21154502), we get a palindrome (41699614).

The spelling of 20545112 in words is "twenty million, five hundred forty-five thousand, one hundred twelve".