3020905 has 8 divisors (see below), whose sum is σ = 3816000. Its totient is φ = 2289456.

The previous prime is 3020893. The next prime is 3020911. The reversal of 3020905 is 5090203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3020905 - 2⁵ = 3020873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

3020905 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15805 + ... + 15994.

It is an arithmetic number, because the mean of its divisors is an integer number (477000).

Almost surely, 2^3020905 is an apocalyptic number.

It is an amenable number.

3020905 is a deficient number, since it is larger than the sum of its proper divisors (795095).

3020905 is a wasteful number, since it uses less digits than its factorization.

3020905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31823.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 3020905 is about 1738.0750846842. The cubic root of 3020905 is about 144.5591844180.

The spelling of 3020905 in words is "three million, twenty thousand, nine hundred five".