80026945 has 4 divisors (see below), whose sum is σ = 96032340. Its totient is φ = 64021552.

The previous prime is 80026943. The next prime is 80026963. The reversal of 80026945 is 54962008.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17363889 + 62663056 = 4167^2 + 7916^2 .

It is a cyclic number.

It is not a de Polignac number, because 80026945 - 2¹ = 80026943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80026945.

It is not an unprimeable number, because it can be changed into a prime (80026943) 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, 8002690 + ... + 8002699.

It is an arithmetic number, because the mean of its divisors is an integer number (24008085).

Almost surely, 2^80026945 is an apocalyptic number.

It is an amenable number.

80026945 is a deficient number, since it is larger than the sum of its proper divisors (16005395).

80026945 is a wasteful number, since it uses less digits than its factorization.

80026945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16005394.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 80026945 is about 8945.7780544791. The cubic root of 80026945 is about 430.9353086118.

The spelling of 80026945 in words is "eighty million, twenty-six thousand, nine hundred forty-five".