102805227 has 32 divisors (see below), whose sum is σ = 175784960. Its totient is φ = 58164480.

The previous prime is 102805223. The next prime is 102805229. The reversal of 102805227 is 722508201.

It is not a de Polignac number, because 102805227 - 2² = 102805223 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102805227.

It is not an unprimeable number, because it can be changed into a prime (102805223) 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, 16827 + ... + 22107.

It is an arithmetic number, because the mean of its divisors is an integer number (5493280).

Almost surely, 2^102805227 is an apocalyptic number.

102805227 is a deficient number, since it is larger than the sum of its proper divisors (72979733).

102805227 is a wasteful number, since it uses less digits than its factorization.

102805227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5400 (or 5394 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 102805227 is about 10139.2912474196. The cubic root of 102805227 is about 468.4591565388.

The spelling of 102805227 in words is "one hundred two million, eight hundred five thousand, two hundred twenty-seven".