78261314 has 16 divisors (see below), whose sum is σ = 122524920. Its totient is φ = 37443840.

The previous prime is 78261311. The next prime is 78261331. The reversal of 78261314 is 41316287.

It can be written as a sum of positive squares in 4 ways, for example, as 35581225 + 42680089 = 5965^2 + 6533^2 .

It is a super-2 number, since 2×78261314² = 12249666538013192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78261311) 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, 584 + ... + 12524.

Almost surely, 2^78261314 is an apocalyptic number.

78261314 is a deficient number, since it is larger than the sum of its proper divisors (44263606).

78261314 is a wasteful number, since it uses less digits than its factorization.

78261314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12085.

The product of its digits is 8064, while the sum is 32.

The square root of 78261314 is about 8846.5424884528. The cubic root of 78261314 is about 427.7424754411.

The spelling of 78261314 in words is "seventy-eight million, two hundred sixty-one thousand, three hundred fourteen".