78951215 has 8 divisors (see below), whose sum is σ = 108276000. Its totient is φ = 54137952.

The previous prime is 78951193. The next prime is 78951217. The reversal of 78951215 is 51215987.

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

It is a cyclic number.

It is not a de Polignac number, because 78951215 - 2⁸ = 78950959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78951217) 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, 1127840 + ... + 1127909.

It is an arithmetic number, because the mean of its divisors is an integer number (13534500).

Almost surely, 2^78951215 is an apocalyptic number.

78951215 is a deficient number, since it is larger than the sum of its proper divisors (29324785).

78951215 is a wasteful number, since it uses less digits than its factorization.

78951215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255761.

The product of its digits is 25200, while the sum is 38.

The square root of 78951215 is about 8885.4496228385. The cubic root of 78951215 is about 428.9957001904.

The spelling of 78951215 in words is "seventy-eight million, nine hundred fifty-one thousand, two hundred fifteen".