78952857 has 8 divisors (see below), whose sum is σ = 108115776. Its totient is φ = 51212592.

The previous prime is 78952843. The next prime is 78952871. The reversal of 78952857 is 75825987.

It is an interprime number because it is at equal distance from previous prime (78952843) and next prime (78952871).

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

It is not a de Polignac number, because 78952857 - 2⁶ = 78952793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78952807) 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, 355533 + ... + 355754.

It is an arithmetic number, because the mean of its divisors is an integer number (13514472).

Almost surely, 2^78952857 is an apocalyptic number.

It is an amenable number.

78952857 is a deficient number, since it is larger than the sum of its proper divisors (29162919).

78952857 is a wasteful number, since it uses less digits than its factorization.

78952857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711327.

The product of its digits is 1411200, while the sum is 51.

The square root of 78952857 is about 8885.5420206085. The cubic root of 78952857 is about 428.9986742044.

The spelling of 78952857 in words is "seventy-eight million, nine hundred fifty-two thousand, eight hundred fifty-seven".