78000387 has 8 divisors (see below), whose sum is σ = 105465600. Its totient is φ = 51267720.

The previous prime is 78000361. The next prime is 78000407. The reversal of 78000387 is 78300087.

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

It is not a de Polignac number, because 78000387 - 2²⁶ = 10891523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78000317) 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, 182887 + ... + 183312.

It is an arithmetic number, because the mean of its divisors is an integer number (13183200).

Almost surely, 2^78000387 is an apocalyptic number.

78000387 is a deficient number, since it is larger than the sum of its proper divisors (27465213).

78000387 is a wasteful number, since it uses less digits than its factorization.

78000387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366273.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 78000387 is about 8831.7827758613. The cubic root of 78000387 is about 427.2665748006.

It can be divided in two parts, 78000 and 387, that added together give a palindrome (78387).

The spelling of 78000387 in words is "seventy-eight million, three hundred eighty-seven", and thus it is an aban number.