78957827 has 16 divisors (see below), whose sum is σ = 89241600. Its totient is φ = 69312672.

The previous prime is 78957821. The next prime is 78957829. The reversal of 78957827 is 72875987.

It is not a de Polignac number, because 78957827 - 2⁶ = 78957763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78957821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58838 + ... + 60164.

It is an arithmetic number, because the mean of its divisors is an integer number (5577600).

Almost surely, 2^78957827 is an apocalyptic number.

78957827 is a deficient number, since it is larger than the sum of its proper divisors (10283773).

78957827 is a wasteful number, since it uses less digits than its factorization.

78957827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562.

The product of its digits is 1975680, while the sum is 53.

The square root of 78957827 is about 8885.8216840087. The cubic root of 78957827 is about 429.0076756885.

The spelling of 78957827 in words is "seventy-eight million, nine hundred fifty-seven thousand, eight hundred twenty-seven".