3630128172 has 48 divisors (see below), whose sum is σ = 9351683712. Its totient is φ = 1086782080.

The previous prime is 3630128147. The next prime is 3630128191. The reversal of 3630128172 is 2718210363.

It is a super-3 number, since 3×3630128172³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 154713 + ... + 176624.

It is an arithmetic number, because the mean of its divisors is an integer number (194826744).

Almost surely, 2^3630128172 is an apocalyptic number.

It is an amenable number.

3630128172 is an abundant number, since it is smaller than the sum of its proper divisors (5721555540).

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

3630128172 is a wasteful number, since it uses less digits than its factorization.

3630128172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331438 (or 331436 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 3630128172 is about 60250.5449933857. The cubic root of 3630128172 is about 1536.8824563103.

The spelling of 3630128172 in words is "three billion, six hundred thirty million, one hundred twenty-eight thousand, one hundred seventy-two".