102478218 has 32 divisors (see below), whose sum is σ = 207567360. Its totient is φ = 33727680.

The previous prime is 102478217. The next prime is 102478223. The reversal of 102478218 is 812874201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102478217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213703 + ... + 214181.

It is an arithmetic number, because the mean of its divisors is an integer number (6486480).

Almost surely, 2^102478218 is an apocalyptic number.

102478218 is an abundant number, since it is smaller than the sum of its proper divisors (105089142).

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

102478218 is a wasteful number, since it uses less digits than its factorization.

102478218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 102478218 is about 10123.1525721981. The cubic root of 102478218 is about 467.9619280155.

The spelling of 102478218 in words is "one hundred two million, four hundred seventy-eight thousand, two hundred eighteen".