78427395 has 24 divisors (see below), whose sum is σ = 138174192. Its totient is φ = 41140800.

The previous prime is 78427387. The next prime is 78427403. The reversal of 78427395 is 59372487.

It is an interprime number because it is at equal distance from previous prime (78427387) and next prime (78427403).

It is not a de Polignac number, because 78427395 - 2³ = 78427387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 78427395.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11541 + ... + 17030.

It is an arithmetic number, because the mean of its divisors is an integer number (5757258).

Almost surely, 2^78427395 is an apocalyptic number.

78427395 is a deficient number, since it is larger than the sum of its proper divisors (59746797).

78427395 is a wasteful number, since it uses less digits than its factorization.

78427395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28643 (or 28640 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 78427395 is about 8855.9242882942. The cubic root of 78427395 is about 428.0448372831.

The spelling of 78427395 in words is "seventy-eight million, four hundred twenty-seven thousand, three hundred ninety-five".