80278345 has 16 divisors (see below), whose sum is σ = 113073408. Its totient is φ = 53559360.

The previous prime is 80278343. The next prime is 80278357. The reversal of 80278345 is 54387208.

It is not a de Polignac number, because 80278345 - 2¹ = 80278343 is a prime.

It is a super-2 number, since 2×80278345² = 12889225351878050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (80278343) 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 15 ways as a sum of consecutive naturals, for example, 29701 + ... + 32290.

It is an arithmetic number, because the mean of its divisors is an integer number (7067088).

Almost surely, 2^80278345 is an apocalyptic number.

It is an amenable number.

80278345 is a deficient number, since it is larger than the sum of its proper divisors (32795063).

80278345 is a wasteful number, since it uses less digits than its factorization.

80278345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62040.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 80278345 is about 8959.8183575338. The cubic root of 80278345 is about 431.3860896548.

The spelling of 80278345 in words is "eighty million, two hundred seventy-eight thousand, three hundred forty-five".