7649388 has 72 divisors (see below), whose sum is σ = 21228480. Its totient is φ = 2311680.

The previous prime is 7649377. The next prime is 7649393. The reversal of 7649388 is 8839467.

It is a happy number.

7649388 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17533 + ... + 17963.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

Almost surely, 2^7649388 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 7649388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10614240).

7649388 is an abundant number, since it is smaller than the sum of its proper divisors (13579092).

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

7649388 is a wasteful number, since it uses less digits than its factorization.

7649388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 482 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 7649388 is about 2765.7527004416. The cubic root of 7649388 is about 197.0344790931.

The spelling of 7649388 in words is "seven million, six hundred forty-nine thousand, three hundred eighty-eight".