8200978 has 4 divisors (see below), whose sum is σ = 12301470. Its totient is φ = 4100488.

The previous prime is 8200921. The next prime is 8200979. The reversal of 8200978 is 8790028.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 5368489 + 2832489 = 2317^2 + 1683^2 .

It is not an unprimeable number, because it can be changed into a prime (8200979) 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 as a sum of consecutive naturals, namely, 2050243 + ... + 2050246.

Almost surely, 2^8200978 is an apocalyptic number.

8200978 is a deficient number, since it is larger than the sum of its proper divisors (4100492).

8200978 is a wasteful number, since it uses less digits than its factorization.

8200978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100491.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 8200978 is about 2863.7349737711. The cubic root of 8200978 is about 201.6609841382.

It can be divided in two parts, 8 and 200978, that multiplied together give a square (1607824 = 1268²).

The spelling of 8200978 in words is "eight million, two hundred thousand, nine hundred seventy-eight".