8077220 has 12 divisors (see below), whose sum is σ = 16962204. Its totient is φ = 3230880.

The previous prime is 8077217. The next prime is 8077247. The reversal of 8077220 is 227708.

It can be written as a sum of positive squares in 2 ways, for example, as 2951524 + 5125696 = 1718^2 + 2264^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8077220.

It is a congruent number.

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, 201911 + ... + 201950.

It is an arithmetic number, because the mean of its divisors is an integer number (1413517).

Almost surely, 2^8077220 is an apocalyptic number.

It is an amenable number.

8077220 is an abundant number, since it is smaller than the sum of its proper divisors (8884984).

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

8077220 is a wasteful number, since it uses less digits than its factorization.

8077220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403870 (or 403868 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 8077220 is about 2842.0450383483. The cubic root of 8077220 is about 200.6414405707.

The spelling of 8077220 in words is "eight million, seventy-seven thousand, two hundred twenty".