80220778 has 8 divisors (see below), whose sum is σ = 131270400. Its totient is φ = 36463980.

The previous prime is 80220743. The next prime is 80220779. The reversal of 80220778 is 87702208.

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 (80220779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1823178 + ... + 1823221.

It is an arithmetic number, because the mean of its divisors is an integer number (16408800).

Almost surely, 2^80220778 is an apocalyptic number.

80220778 is a deficient number, since it is larger than the sum of its proper divisors (51049622).

80220778 is a wasteful number, since it uses less digits than its factorization.

80220778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646412.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 80220778 is about 8956.6052720883. The cubic root of 80220778 is about 431.2829504194.

The spelling of 80220778 in words is "eighty million, two hundred twenty thousand, seven hundred seventy-eight".