80628019 has 4 divisors (see below), whose sum is σ = 80974296. Its totient is φ = 80281744.

The previous prime is 80628013. The next prime is 80628029. The reversal of 80628019 is 91082608.

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

It is a cyclic number.

It is not a de Polignac number, because 80628019 - 2⁷ = 80627891 is a prime.

It is a super-2 number, since 2×80628019² = 13001754895728722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80628013) 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, 172789 + ... + 173254.

It is an arithmetic number, because the mean of its divisors is an integer number (20243574).

Almost surely, 2^80628019 is an apocalyptic number.

80628019 is a deficient number, since it is larger than the sum of its proper divisors (346277).

80628019 is a wasteful number, since it uses less digits than its factorization.

80628019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346276.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 80628019 is about 8979.3106082817. The cubic root of 80628019 is about 432.0115219692.

The spelling of 80628019 in words is "eighty million, six hundred twenty-eight thousand, nineteen".