7648428 has 12 divisors (see below), whose sum is σ = 17846360. Its totient is φ = 2549472.

The previous prime is 7648411. The next prime is 7648439. The reversal of 7648428 is 8248467.

7648428 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 318673 + ... + 318696.

Almost surely, 2^7648428 is an apocalyptic number.

It is an amenable number.

7648428 is an abundant number, since it is smaller than the sum of its proper divisors (10197932).

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

7648428 is a wasteful number, since it uses less digits than its factorization.

7648428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637376 (or 637374 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 7648428 is about 2765.5791436876. The cubic root of 7648428 is about 197.0262361237.

Adding to 7648428 its sum of digits (39), we get a palindrome (7648467).

The spelling of 7648428 in words is "seven million, six hundred forty-eight thousand, four hundred twenty-eight".