78810 has 32 divisors (see below), whose sum is σ = 196992. Its totient is φ = 20160.

The previous prime is 78809. The next prime is 78823. The reversal of 78810 is 1887.

It is a super-2 number, since 2×78810² = 12422032200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1075 + ... + 1145.

It is an arithmetic number, because the mean of its divisors is an integer number (6156).

2⁷⁸⁸¹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98496).

78810 is an abundant number, since it is smaller than the sum of its proper divisors (118182).

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

78810 is a wasteful number, since it uses less digits than its factorization.

78810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 78810 is about 280.7311881498. The cubic root of 78810 is about 42.8739775133.

It can be divided in two parts, 78 and 810, that added together give a palindrome (888).

The spelling of 78810 in words is "seventy-eight thousand, eight hundred ten".