3603172428 has 72 divisors (see below), whose sum is σ = 9246182400. Its totient is φ = 1182929376.

The previous prime is 3603172427. The next prime is 3603172493. The reversal of 3603172428 is 8242713063.

It is a happy number.

3603172428 is a `hidden beast` number, since 3 + 60 + 3 + 172 + 428 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3603172392 and 3603172401.

It is not an unprimeable number, because it can be changed into a prime (3603172427) 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, 1071013 + ... + 1074371.

It is an arithmetic number, because the mean of its divisors is an integer number (128419200).

Almost surely, 2^3603172428 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 3603172428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4623091200).

3603172428 is an abundant number, since it is smaller than the sum of its proper divisors (5643009972).

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

3603172428 is a wasteful number, since it uses less digits than its factorization.

3603172428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811 (or 3806 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 3603172428 is about 60026.4310783175. The cubic root of 3603172428 is about 1533.0689291836.

The spelling of 3603172428 in words is "three billion, six hundred three million, one hundred seventy-two thousand, four hundred twenty-eight".