78275345 has 16 divisors (see below), whose sum is σ = 100237440. Its totient is φ = 58506624.

The previous prime is 78275339. The next prime is 78275357. The reversal of 78275345 is 54357287.

It is not a de Polignac number, because 78275345 - 2¹⁰ = 78274321 is a prime.

It is a super-2 number, since 2×78275345² = 12254059269738050, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1292 + ... + 12578.

It is an arithmetic number, because the mean of its divisors is an integer number (6264840).

Almost surely, 2^78275345 is an apocalyptic number.

It is an amenable number.

78275345 is a deficient number, since it is larger than the sum of its proper divisors (21962095).

78275345 is a wasteful number, since it uses less digits than its factorization.

78275345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11384.

The product of its digits is 235200, while the sum is 41.

The square root of 78275345 is about 8847.3354745935. The cubic root of 78275345 is about 427.7680363717.

The spelling of 78275345 in words is "seventy-eight million, two hundred seventy-five thousand, three hundred forty-five".