78360210 has 64 divisors (see below), whose sum is σ = 211599360. Its totient is φ = 20890224.

The previous prime is 78360203. The next prime is 78360211. The reversal of 78360210 is 1206387.

It is a super-2 number, since 2×78360210² = 12280645022488200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (78360211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20079 + ... + 23661.

It is an arithmetic number, because the mean of its divisors is an integer number (3306240).

Almost surely, 2^78360210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78360210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105799680).

78360210 is an abundant number, since it is smaller than the sum of its proper divisors (133239150).

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

78360210 is an equidigital number, since it uses as much as digits as its factorization.

78360210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611 (or 3593 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 78360210 is about 8852.1302520919. The cubic root of 78360210 is about 427.9225738477.

Adding to 78360210 its reverse (1206387), we get a palindrome (79566597).

The spelling of 78360210 in words is "seventy-eight million, three hundred sixty thousand, two hundred ten".