78430365 has 36 divisors (see below), whose sum is σ = 147222036. Its totient is φ = 38608128.

The previous prime is 78430361. The next prime is 78430369. The reversal of 78430365 is 56303487.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78430361) and next prime (78430369).

It can be written as a sum of positive squares in 6 ways, for example, as 18429849 + 60000516 = 4293^2 + 7746^2 .

It is not a de Polignac number, because 78430365 - 2² = 78430361 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78430361) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2449 + ... + 12761.

It is an arithmetic number, because the mean of its divisors is an integer number (4089501).

Almost surely, 2^78430365 is an apocalyptic number.

It is an amenable number.

78430365 is a deficient number, since it is larger than the sum of its proper divisors (68791671).

78430365 is a wasteful number, since it uses less digits than its factorization.

78430365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10350 (or 10334 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 78430365 is about 8856.0919710671. The cubic root of 78430365 is about 428.0502404848.

The spelling of 78430365 in words is "seventy-eight million, four hundred thirty thousand, three hundred sixty-five".