3631128 has 32 divisors (see below), whose sum is σ = 9556800. Its totient is φ = 1146528.

The previous prime is 3631073. The next prime is 3631139. The reversal of 3631128 is 8211363.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3631098 and 3631107.

It is a congruent number.

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, 3526 + ... + 4437.

It is an arithmetic number, because the mean of its divisors is an integer number (298650).

Almost surely, 2^3631128 is an apocalyptic number.

3631128 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3631128 is an abundant number, since it is smaller than the sum of its proper divisors (5925672).

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

3631128 is a wasteful number, since it uses less digits than its factorization.

3631128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7991 (or 7987 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 3631128 is about 1905.5518885614. The cubic root of 3631128 is about 153.7023541968.

The spelling of 3631128 in words is "three million, six hundred thirty-one thousand, one hundred twenty-eight".