3642028 has 12 divisors (see below), whose sum is σ = 6863920. Its totient is φ = 1680912.

The previous prime is 3642019. The next prime is 3642031. The reversal of 3642028 is 8202463.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3641993 and 3642011.

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, 34968 + ... + 35071.

Almost surely, 2^3642028 is an apocalyptic number.

It is an amenable number.

3642028 is a deficient number, since it is larger than the sum of its proper divisors (3221892).

3642028 is a wasteful number, since it uses less digits than its factorization.

3642028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70056 (or 70054 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 3642028 is about 1908.4098092391. The cubic root of 3642028 is about 153.8559962677.

The spelling of 3642028 in words is "three million, six hundred forty-two thousand, twenty-eight".