78314305 has 8 divisors (see below), whose sum is σ = 96269544. Its totient is φ = 61123200.

The previous prime is 78314303. The next prime is 78314317. The reversal of 78314305 is 50341387.

78314305 = T₁₉₃₄ + T₁₉₃₅ + ... + T₁₉₇₄.

It can be written as a sum of positive squares in 4 ways, for example, as 97969 + 78216336 = 313^2 + 8844^2 .

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

It is not a de Polignac number, because 78314305 - 2¹ = 78314303 is a prime.

It is a super-2 number, since 2×78314305² = 12266260735266050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78314303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190806 + ... + 191215.

It is an arithmetic number, because the mean of its divisors is an integer number (12033693).

Almost surely, 2^78314305 is an apocalyptic number.

It is an amenable number.

78314305 is a deficient number, since it is larger than the sum of its proper divisors (17955239).

78314305 is a wasteful number, since it uses less digits than its factorization.

78314305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382067.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 78314305 is about 8849.5369935381. The cubic root of 78314305 is about 427.8389956179.

The spelling of 78314305 in words is "seventy-eight million, three hundred fourteen thousand, three hundred five".