7868020 has 12 divisors (see below), whose sum is σ = 16522884. Its totient is φ = 3147200.

The previous prime is 7867999. The next prime is 7868027. The reversal of 7868020 is 208687.

It can be written as a sum of positive squares in 2 ways, for example, as 1527696 + 6340324 = 1236^2 + 2518^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7868027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196681 + ... + 196720.

It is an arithmetic number, because the mean of its divisors is an integer number (1376907).

Almost surely, 2^7868020 is an apocalyptic number.

It is an amenable number.

7868020 is an abundant number, since it is smaller than the sum of its proper divisors (8654864).

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

7868020 is a wasteful number, since it uses less digits than its factorization.

7868020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393410 (or 393408 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 7868020 is about 2804.9991087343. Note that the first 3 decimals coincide. The cubic root of 7868020 is about 198.8940624496.

The spelling of 7868020 in words is "seven million, eight hundred sixty-eight thousand, twenty".