500000078 has 8 divisors (see below), whose sum is σ = 775862280. Its totient is φ = 241379320.

The previous prime is 500000077. The next prime is 500000089. The reversal of 500000078 is 870000005.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500000071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4310288 + ... + 4310403.

It is an arithmetic number, because the mean of its divisors is an integer number (96982785).

Almost surely, 2^500000078 is an apocalyptic number.

500000078 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

500000078 is a deficient number, since it is larger than the sum of its proper divisors (275862202).

500000078 is a wasteful number, since it uses less digits than its factorization.

500000078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8620722.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 500000078 is about 22360.6815191309. The cubic root of 500000078 is about 793.7005672565.

The spelling of 500000078 in words is "five hundred million, seventy-eight", and thus it is an aban number.