4000032045 has 32 divisors (see below), whose sum is σ = 7122589440. Its totient is φ = 2129924160.

The previous prime is 4000032041. The next prime is 4000032061. The reversal of 4000032045 is 5402300004.

It is a happy number.

It is not a de Polignac number, because 4000032045 - 2² = 4000032041 is a prime.

It is a super-2 number, since 2×4000032045² = 32000512722053764050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000032041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61707 + ... + 108663.

It is an arithmetic number, because the mean of its divisors is an integer number (222580920).

Almost surely, 2^4000032045 is an apocalyptic number.

4000032045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4000032045 is a deficient number, since it is larger than the sum of its proper divisors (3122557395).

4000032045 is a wasteful number, since it uses less digits than its factorization.

4000032045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47602 (or 47596 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4000032045 is about 63245.8065408293. The cubic root of 4000032045 is about 1587.4052909791.

Adding to 4000032045 its reverse (5402300004), we get a palindrome (9402332049).

The spelling of 4000032045 in words is "four billion, thirty-two thousand, forty-five".