3666358728 has 96 divisors (see below), whose sum is σ = 10313503200. Its totient is φ = 1220220288.

The previous prime is 3666358721. The next prime is 3666358733. The reversal of 3666358728 is 8278536663.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (3666358721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1851643 + ... + 1853621.

It is an arithmetic number, because the mean of its divisors is an integer number (107432325).

Almost surely, 2^3666358728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3666358728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5156751600).

3666358728 is an abundant number, since it is smaller than the sum of its proper divisors (6647144472).

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

3666358728 is a wasteful number, since it uses less digits than its factorization.

3666358728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2937 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The square root of 3666358728 is about 60550.4643087070. The cubic root of 3666358728 is about 1541.9785005102.

The spelling of 3666358728 in words is "three billion, six hundred sixty-six million, three hundred fifty-eight thousand, seven hundred twenty-eight".