102806018 has 40 divisors (see below), whose sum is σ = 182849280. Its totient is φ = 43341480.

The previous prime is 102806003. The next prime is 102806023. The reversal of 102806018 is 810608201.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 379223 + ... + 379493.

It is an arithmetic number, because the mean of its divisors is an integer number (4571232).

Almost surely, 2^102806018 is an apocalyptic number.

102806018 is a deficient number, since it is larger than the sum of its proper divisors (80043262).

102806018 is an frugal number, since it uses more digits than its factorization.

102806018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 102806018 is about 10139.3302540158. The cubic root of 102806018 is about 468.4603580025.

The spelling of 102806018 in words is "one hundred two million, eight hundred six thousand, eighteen".