3655428 has 24 divisors (see below), whose sum is σ = 9748032. Its totient is φ = 1044384.

The previous prime is 3655423. The next prime is 3655447. The reversal of 3655428 is 8245563.

3655428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3655423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21675 + ... + 21842.

It is an arithmetic number, because the mean of its divisors is an integer number (406168).

Almost surely, 2^3655428 is an apocalyptic number.

It is an amenable number.

3655428 is an abundant number, since it is smaller than the sum of its proper divisors (6092604).

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

3655428 is a wasteful number, since it uses less digits than its factorization.

3655428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43531 (or 43529 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 3655428 is about 1911.9173622309. The cubic root of 3655428 is about 154.0444578452.

The spelling of 3655428 in words is "three million, six hundred fifty-five thousand, four hundred twenty-eight".