3639488 has 56 divisors (see below), whose sum is σ = 7894320. Its totient is φ = 1658880.

The previous prime is 3639487. The next prime is 3639499. The reversal of 3639488 is 8849363.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (3639481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49820 + ... + 49892.

It is an arithmetic number, because the mean of its divisors is an integer number (140970).

Almost surely, 2^3639488 is an apocalyptic number.

3639488 is a gapful number since it is divisible by the number (38) 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 3639488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3947160).

3639488 is an abundant number, since it is smaller than the sum of its proper divisors (4254832).

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

3639488 is a wasteful number, since it uses less digits than its factorization.

3639488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 135 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 3639488 is about 1907.7442176560. The cubic root of 3639488 is about 153.8202208596.

The spelling of 3639488 in words is "three million, six hundred thirty-nine thousand, four hundred eighty-eight".