20745034 has 16 divisors (see below), whose sum is σ = 33592320. Its totient is φ = 9578800.

The previous prime is 20745031. The next prime is 20745037. The reversal of 20745034 is 43054702.

It is an interprime number because it is at equal distance from previous prime (20745031) and next prime (20745037).

It is a super-2 number, since 2×20745034² = 860712871322312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20745031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6442 + ... + 9109.

It is an arithmetic number, because the mean of its divisors is an integer number (2099520).

Almost surely, 2^20745034 is an apocalyptic number.

20745034 is a deficient number, since it is larger than the sum of its proper divisors (12847286).

20745034 is a wasteful number, since it uses less digits than its factorization.

20745034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15605.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 20745034 is about 4554.6716676397. The cubic root of 20745034 is about 274.7713095980.

Adding to 20745034 its reverse (43054702), we get a palindrome (63799736).

The spelling of 20745034 in words is "twenty million, seven hundred forty-five thousand, thirty-four".