80628946 has 8 divisors (see below), whose sum is σ = 122926284. Its totient is φ = 39653520.

The previous prime is 80628941. The next prime is 80628959. The reversal of 80628946 is 64982608.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80192025 + 436921 = 8955^2 + 661^2 .

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 (80628941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330325 + ... + 330568.

Almost surely, 2^80628946 is an apocalyptic number.

80628946 is a deficient number, since it is larger than the sum of its proper divisors (42297338).

80628946 is a wasteful number, since it uses less digits than its factorization.

80628946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660956.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 80628946 is about 8979.3622267954. The cubic root of 80628946 is about 432.0131776101.

The spelling of 80628946 in words is "eighty million, six hundred twenty-eight thousand, nine hundred forty-six".