80278285 has 8 divisors (see below), whose sum is σ = 96521976. Its totient is φ = 64097280.

The previous prime is 80278283. The next prime is 80278321. The reversal of 80278285 is 58287208.

It can be written as a sum of positive squares in 4 ways, for example, as 515524 + 79762761 = 718^2 + 8931^2 .

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

It is not a de Polignac number, because 80278285 - 2¹ = 80278283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80278283) 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 7 ways as a sum of consecutive naturals, for example, 12804 + ... + 18013.

It is an arithmetic number, because the mean of its divisors is an integer number (12065247).

Almost surely, 2^80278285 is an apocalyptic number.

It is an amenable number.

80278285 is a deficient number, since it is larger than the sum of its proper divisors (16243691).

80278285 is a wasteful number, since it uses less digits than its factorization.

80278285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31343.

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 80278285 is about 8959.8150092510. The cubic root of 80278285 is about 431.3859821822.

It can be divided in two parts, 80278 and 285, that multiplied together give a triangular number (22879230 = T₆₇₆₄).

The spelling of 80278285 in words is "eighty million, two hundred seventy-eight thousand, two hundred eighty-five".