80266778 has 8 divisors (see below), whose sum is σ = 122096160. Its totient is φ = 39568060.

The previous prime is 80266777. The next prime is 80266783. The reversal of 80266778 is 87766208.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (80266777) 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, 282488 + ... + 282771.

It is an arithmetic number, because the mean of its divisors is an integer number (15262020).

Almost surely, 2^80266778 is an apocalyptic number.

80266778 is a deficient number, since it is larger than the sum of its proper divisors (41829382).

80266778 is a wasteful number, since it uses less digits than its factorization.

80266778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565332.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 80266778 is about 8959.1728412840. The cubic root of 80266778 is about 431.3653697352.

The spelling of 80266778 in words is "eighty million, two hundred sixty-six thousand, seven hundred seventy-eight".