4020032445 has 64 divisors (see below), whose sum is σ = 7954329600. Its totient is φ = 1704464640.

The previous prime is 4020032441. The next prime is 4020032503. The reversal of 4020032445 is 5442300204.

It is not a de Polignac number, because 4020032445 - 2² = 4020032441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020032441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8565 + ... + 90074.

It is an arithmetic number, because the mean of its divisors is an integer number (124286400).

Almost surely, 2^4020032445 is an apocalyptic number.

It is an amenable number.

4020032445 is a deficient number, since it is larger than the sum of its proper divisors (3934297155).

4020032445 is a wasteful number, since it uses less digits than its factorization.

4020032445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98690.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 4020032445 is about 63403.7257974640. The cubic root of 4020032445 is about 1590.0466008255.

Adding to 4020032445 its reverse (5442300204), we get a palindrome (9462332649).

The spelling of 4020032445 in words is "four billion, twenty million, thirty-two thousand, four hundred forty-five".