3621992728 has 8 divisors (see below), whose sum is σ = 6791236380. Its totient is φ = 1810996360.

The previous prime is 3621992723. The next prime is 3621992741. The reversal of 3621992728 is 8272991263.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621992723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226374538 + ... + 226374553.

Almost surely, 2^3621992728 is an apocalyptic number.

It is an amenable number.

3621992728 is a deficient number, since it is larger than the sum of its proper divisors (3169243652).

3621992728 is a wasteful number, since it uses less digits than its factorization.

3621992728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452749097 (or 452749093 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 3621992728 is about 60182.9936776163. The cubic root of 3621992728 is about 1535.7335002686.

The spelling of 3621992728 in words is "three billion, six hundred twenty-one million, nine hundred ninety-two thousand, seven hundred twenty-eight".