78871760 has 40 divisors (see below), whose sum is σ = 200049696. Its totient is φ = 28680320.

The previous prime is 78871747. The next prime is 78871763. The reversal of 78871760 is 6717887.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78871763) 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, 43934 + ... + 45693.

Almost surely, 2^78871760 is an apocalyptic number.

It is an amenable number.

78871760 is an abundant number, since it is smaller than the sum of its proper divisors (121177936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78871760 is a wasteful number, since it uses less digits than its factorization.

78871760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89651 (or 89645 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 44.

The square root of 78871760 is about 8880.9774236849. The cubic root of 78871760 is about 428.8517408512.

The spelling of 78871760 in words is "seventy-eight million, eight hundred seventy-one thousand, seven hundred sixty".