3078820 has 12 divisors (see below), whose sum is σ = 6465564. Its totient is φ = 1231520.

The previous prime is 3078799. The next prime is 3078821. The reversal of 3078820 is 288703.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1028196 + 2050624 = 1014^2 + 1432^2 .

It is not an unprimeable number, because it can be changed into a prime (3078821) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 76951 + ... + 76990.

It is an arithmetic number, because the mean of its divisors is an integer number (538797).

Almost surely, 2^3078820 is an apocalyptic number.

It is an amenable number.

3078820 is an abundant number, since it is smaller than the sum of its proper divisors (3386744).

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

3078820 is a wasteful number, since it uses less digits than its factorization.

3078820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153950 (or 153948 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 3078820 is about 1754.6566615723. The cubic root of 3078820 is about 145.4771439793.

The spelling of 3078820 in words is "three million, seventy-eight thousand, eight hundred twenty".