102228709 has 4 divisors (see below), whose sum is σ = 111522240. Its totient is φ = 92935180.

The previous prime is 102228697. The next prime is 102228719. The reversal of 102228709 is 907822201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102228709 - 2²¹ = 100131557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102228719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4646749 + ... + 4646770.

It is an arithmetic number, because the mean of its divisors is an integer number (27880560).

Almost surely, 2^102228709 is an apocalyptic number.

It is an amenable number.

102228709 is a deficient number, since it is larger than the sum of its proper divisors (9293531).

102228709 is an equidigital number, since it uses as much as digits as its factorization.

102228709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9293530.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 102228709 is about 10110.8213810748. The cubic root of 102228709 is about 467.5818290232.

The spelling of 102228709 in words is "one hundred two million, two hundred twenty-eight thousand, seven hundred nine".