7381648 has 30 divisors (see below), whose sum is σ = 14742546. Its totient is φ = 3580416.

The previous prime is 7381639. The next prime is 7381651. The reversal of 7381648 is 8461837.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3268864 + 4112784 = 1808^2 + 2028^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21736 + ... + 22072.

Almost surely, 2^7381648 is an apocalyptic number.

It is an amenable number.

7381648 is a deficient number, since it is larger than the sum of its proper divisors (7360898).

7381648 is a wasteful number, since it uses less digits than its factorization.

7381648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 376 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 7381648 is about 2716.9188431015. The cubic root of 7381648 is about 194.7082905509.

The spelling of 7381648 in words is "seven million, three hundred eighty-one thousand, six hundred forty-eight".