3648988 has 30 divisors (see below), whose sum is σ = 7703416. Its totient is φ = 1481544.

The previous prime is 3648947. The next prime is 3648989. The reversal of 3648988 is 8898463.

It is a super-2 number, since 2×3648988² = 26630226848288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3648989) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 192043 + ... + 192061.

Almost surely, 2^3648988 is an apocalyptic number.

3648988 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 3648988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3851708).

3648988 is an abundant number, since it is smaller than the sum of its proper divisors (4054428).

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

3648988 is an frugal number, since it uses more digits than its factorization.

3648988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 28 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 3648988 is about 1910.2324465886. The cubic root of 3648988 is about 153.9539413618.

The spelling of 3648988 in words is "three million, six hundred forty-eight thousand, nine hundred eighty-eight".