4020045634 has 32 divisors (see below), whose sum is σ = 6795337536. Its totient is φ = 1767568320.

The previous prime is 4020045599. The next prime is 4020045637. The reversal of 4020045634 is 4365400204.

It is not an unprimeable number, because it can be changed into a prime (4020045637) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 126549 + ... + 155095.

It is an arithmetic number, because the mean of its divisors is an integer number (212354298).

Almost surely, 2^4020045634 is an apocalyptic number.

4020045634 is a deficient number, since it is larger than the sum of its proper divisors (2775291902).

4020045634 is a wasteful number, since it uses less digits than its factorization.

4020045634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28770.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 4020045634 is about 63403.8298054621. The cubic root of 4020045634 is about 1590.0483397088.

Adding to 4020045634 its reverse (4365400204), we get a palindrome (8385445838).

The spelling of 4020045634 in words is "four billion, twenty million, forty-five thousand, six hundred thirty-four".