3640832 has 40 divisors (see below), whose sum is σ = 7848456. Its totient is φ = 1677312.

The previous prime is 3640829. The next prime is 3640843. The reversal of 3640832 is 2380463.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6383 + ... + 6929.

Almost surely, 2^3640832 is an apocalyptic number.

3640832 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3640832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3924228).

3640832 is an abundant number, since it is smaller than the sum of its proper divisors (4207624).

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

3640832 is an equidigital number, since it uses as much as digits as its factorization.

3640832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 3640832 is about 1908.0964336217. The cubic root of 3640832 is about 153.8391529122.

The spelling of 3640832 in words is "three million, six hundred forty thousand, eight hundred thirty-two".