4020040560 has 80 divisors (see below), whose sum is σ = 12583194624. Its totient is φ = 1061596416.

The previous prime is 4020040553. The next prime is 4020040571. The reversal of 4020040560 is 650400204.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×4020040560² = 32321452208090227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56592 + ... + 106031.

Almost surely, 2^4020040560 is an apocalyptic number.

4020040560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4020040560 is an abundant number, since it is smaller than the sum of its proper divisors (8563154064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4020040560 is a wasteful number, since it uses less digits than its factorization.

4020040560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162742 (or 162736 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 4020040560 is about 63403.7897920937. The cubic root of 4020040560 is about 1590.0476707356.

Adding to 4020040560 its reverse (650400204), we get a palindrome (4670440764).

The spelling of 4020040560 in words is "four billion, twenty million, forty thousand, five hundred sixty".