4000264660 has 24 divisors (see below), whose sum is σ = 9600635520. Its totient is φ = 1371519264.

The previous prime is 4000264643. The next prime is 4000264661. The reversal of 4000264660 is 664620004.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000264661) 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 7 ways as a sum of consecutive naturals, for example, 14286520 + ... + 14286799.

It is an arithmetic number, because the mean of its divisors is an integer number (400026480).

Almost surely, 2^4000264660 is an apocalyptic number.

It is an amenable number.

4000264660 is an abundant number, since it is smaller than the sum of its proper divisors (5600370860).

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

4000264660 is a wasteful number, since it uses less digits than its factorization.

4000264660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28573335 (or 28573333 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 4000264660 is about 63247.6454897730. The cubic root of 4000264660 is about 1587.4360613263.

Adding to 4000264660 its reverse (664620004), we get a palindrome (4664884664).

The spelling of 4000264660 in words is "four billion, two hundred sixty-four thousand, six hundred sixty".