3631424 has 28 divisors (see below), whose sum is σ = 7522464. Its totient is φ = 1736064.

The previous prime is 3631423. The next prime is 3631427. The reversal of 3631424 is 4241363.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3631424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3631423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239 + ... + 2705.

Almost surely, 2^3631424 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 3631424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3761232).

3631424 is an abundant number, since it is smaller than the sum of its proper divisors (3891040).

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

3631424 is a wasteful number, since it uses less digits than its factorization.

3631424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502 (or 2492 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 3631424 is about 1905.6295547666. The cubic root of 3631424 is about 153.7065305538.

Adding to 3631424 its reverse (4241363), we get a palindrome (7872787).

The spelling of 3631424 in words is "three million, six hundred thirty-one thousand, four hundred twenty-four".