102268809 has 12 divisors (see below), whose sum is σ = 147843696. Its totient is φ = 68122872.

The previous prime is 102268763. The next prime is 102268813. The reversal of 102268809 is 908862201.

It is not a de Polignac number, because 102268809 - 2¹⁶ = 102203273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102268009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8862 + ... + 16824.

It is an arithmetic number, because the mean of its divisors is an integer number (12320308).

Almost surely, 2^102268809 is an apocalyptic number.

It is an amenable number.

102268809 is a deficient number, since it is larger than the sum of its proper divisors (45574887).

102268809 is a wasteful number, since it uses less digits than its factorization.

102268809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9396 (or 9393 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 102268809 is about 10112.8042105046. The cubic root of 102268809 is about 467.6429585579.

The spelling of 102268809 in words is "one hundred two million, two hundred sixty-eight thousand, eight hundred nine".