20745016 has 16 divisors (see below), whose sum is σ = 39846240. Its totient is φ = 10119360.

The previous prime is 20745013. The next prime is 20745019. The reversal of 20745016 is 61054702.

It is an interprime number because it is at equal distance from previous prime (20745013) and next prime (20745019).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20745013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31296 + ... + 31951.

It is an arithmetic number, because the mean of its divisors is an integer number (2490390).

Almost surely, 2^20745016 is an apocalyptic number.

It is an amenable number.

20745016 is a deficient number, since it is larger than the sum of its proper divisors (19101224).

20745016 is a wasteful number, since it uses less digits than its factorization.

20745016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63294 (or 63290 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20745016 is about 4554.6696916461. The cubic root of 20745016 is about 274.7712301270.

Adding to 20745016 its reverse (61054702), we get a palindrome (81799718).

The spelling of 20745016 in words is "twenty million, seven hundred forty-five thousand, sixteen".