78352771 has 8 divisors (see below), whose sum is σ = 90191360. Its totient is φ = 66675528.

The previous prime is 78352739. The next prime is 78352787. The reversal of 78352771 is 17725387.

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 78352771 - 2⁵ = 78352739 is a prime.

It is a super-2 number, since 2×78352771² = 12278313446756882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78352471) 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, 39291 + ... + 41236.

It is an arithmetic number, because the mean of its divisors is an integer number (11273920).

Almost surely, 2^78352771 is an apocalyptic number.

78352771 is a deficient number, since it is larger than the sum of its proper divisors (11838589).

78352771 is a wasteful number, since it uses less digits than its factorization.

78352771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80673.

The product of its digits is 82320, while the sum is 40.

The square root of 78352771 is about 8851.7100607736. The cubic root of 78352771 is about 427.9090320396.

The spelling of 78352771 in words is "seventy-eight million, three hundred fifty-two thousand, seven hundred seventy-one".