6629428 has 36 divisors (see below), whose sum is σ = 13114948. Its totient is φ = 2914560.

The previous prime is 6629411. The next prime is 6629437. The reversal of 6629428 is 8249266.

6629428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2896804 + 3732624 = 1702^2 + 1932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27388 + ... + 27628.

Almost surely, 2^6629428 is an apocalyptic number.

It is an amenable number.

6629428 is a deficient number, since it is larger than the sum of its proper divisors (6485520).

6629428 is a wasteful number, since it uses less digits than its factorization.

6629428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 279 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 6629428 is about 2574.7675623248. The cubic root of 6629428 is about 187.8561219979.

The spelling of 6629428 in words is "six million, six hundred twenty-nine thousand, four hundred twenty-eight".