20545014 has 64 divisors (see below), whose sum is σ = 48960000. Its totient is φ = 5743584.

The previous prime is 20545001. The next prime is 20545037. The reversal of 20545014 is 41054502.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137812 + ... + 137960.

It is an arithmetic number, because the mean of its divisors is an integer number (765000).

Almost surely, 2^20545014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20545014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24480000).

20545014 is an abundant number, since it is smaller than the sum of its proper divisors (28414986).

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

20545014 is a wasteful number, since it uses less digits than its factorization.

20545014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 20545014 is about 4532.6608079582. The cubic root of 20545014 is about 273.8853570513.

Adding to 20545014 its reverse (41054502), we get a palindrome (61599516).

The spelling of 20545014 in words is "twenty million, five hundred forty-five thousand, fourteen".