102225720 has 32 divisors (see below), whose sum is σ = 306677520. Its totient is φ = 27260160.

The previous prime is 102225713. The next prime is 102225779. The reversal of 102225720 is 27522201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425821 + ... + 426060.

Almost surely, 2^102225720 is an apocalyptic number.

102225720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102225720 is an abundant number, since it is smaller than the sum of its proper divisors (204451800).

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

102225720 is a wasteful number, since it uses less digits than its factorization.

102225720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851895 (or 851891 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 102225720 is about 10110.6735680666. The cubic root of 102225720 is about 467.5772718698.

Adding to 102225720 its reverse (27522201), we get a palindrome (129747921).

The spelling of 102225720 in words is "one hundred two million, two hundred twenty-five thousand, seven hundred twenty".