20445016 has 48 divisors (see below), whose sum is σ = 41997600. Its totient is φ = 9321984.

The previous prime is 20445013. The next prime is 20445017. The reversal of 20445016 is 61054402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85425 + ... + 85663.

It is an arithmetic number, because the mean of its divisors is an integer number (874950).

Almost surely, 2^20445016 is an apocalyptic number.

It is an amenable number.

20445016 is an abundant number, since it is smaller than the sum of its proper divisors (21552584).

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

20445016 is a wasteful number, since it uses less digits than its factorization.

20445016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20445016 is about 4521.6165250937. The cubic root of 20445016 is about 273.4402767457.

Adding to 20445016 its reverse (61054402), we get a palindrome (81499418).

The spelling of 20445016 in words is "twenty million, four hundred forty-five thousand, sixteen".