102210256 has 20 divisors (see below), whose sum is σ = 209681892. Its totient is φ = 48098816.

The previous prime is 102210233. The next prime is 102210271. The reversal of 102210256 is 652012201.

It can be written as a sum of positive squares in 2 ways, for example, as 96040000 + 6170256 = 9800^2 + 2484^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 187615 + ... + 188158.

Almost surely, 2^102210256 is an apocalyptic number.

102210256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

102210256 is an abundant number, since it is smaller than the sum of its proper divisors (107471636).

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

102210256 is a wasteful number, since it uses less digits than its factorization.

102210256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375798 (or 375792 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 102210256 is about 10109.9088027539. The cubic root of 102210256 is about 467.5536933954.

Adding to 102210256 its reverse (652012201), we get a palindrome (754222457).

The spelling of 102210256 in words is "one hundred two million, two hundred ten thousand, two hundred fifty-six".