3020638 has 4 divisors (see below), whose sum is σ = 4530960. Its totient is φ = 1510318.

The previous prime is 3020617. The next prime is 3020651. The reversal of 3020638 is 8360203.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 755158 + ... + 755161.

It is an arithmetic number, because the mean of its divisors is an integer number (1132740).

Almost surely, 2^3020638 is an apocalyptic number.

3020638 is a deficient number, since it is larger than the sum of its proper divisors (1510322).

3020638 is a wasteful number, since it uses less digits than its factorization.

3020638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510321.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 3020638 is about 1737.9982738772. The cubic root of 3020638 is about 144.5549253809.

The spelling of 3020638 in words is "three million, twenty thousand, six hundred thirty-eight".