3728320032 has 48 divisors (see below), whose sum is σ = 9800269920. Its totient is φ = 1241068032.

The previous prime is 3728320009. The next prime is 3728320067. The reversal of 3728320032 is 2300238273.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×3728320032² = 27800740522024962048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44668 + ... + 97220.

It is an arithmetic number, because the mean of its divisors is an integer number (204172290).

Almost surely, 2^3728320032 is an apocalyptic number.

3728320032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3728320032 is an abundant number, since it is smaller than the sum of its proper divisors (6071949888).

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

3728320032 is a wasteful number, since it uses less digits than its factorization.

3728320032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53305 (or 53297 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 3728320032 is about 61059.9707828296. The cubic root of 3728320032 is about 1550.6164779128.

The spelling of 3728320032 in words is "three billion, seven hundred twenty-eight million, three hundred twenty thousand, thirty-two".