8452778 has 4 divisors (see below), whose sum is σ = 12679170. Its totient is φ = 4226388.

The previous prime is 8452771. The next prime is 8452781. The reversal of 8452778 is 8772548.

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., 4464769 + 3988009 = 2113^2 + 1997^2 .

It is not an unprimeable number, because it can be changed into a prime (8452771) 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, 2113193 + ... + 2113196.

Almost surely, 2^8452778 is an apocalyptic number.

8452778 is a deficient number, since it is larger than the sum of its proper divisors (4226392).

8452778 is a wasteful number, since it uses less digits than its factorization.

8452778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226391.

The product of its digits is 125440, while the sum is 41.

The square root of 8452778 is about 2907.3661620099. The cubic root of 8452778 is about 203.7041238126.

The spelling of 8452778 in words is "eight million, four hundred fifty-two thousand, seven hundred seventy-eight".