102249284 has 12 divisors (see below), whose sum is σ = 184708608. Its totient is φ = 49475400.

The previous prime is 102249281. The next prime is 102249289. The reversal of 102249284 is 482942201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102249284.

It is not an unprimeable number, because it can be changed into a prime (102249281) 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, 412172 + ... + 412419.

It is an arithmetic number, because the mean of its divisors is an integer number (15392384).

Almost surely, 2^102249284 is an apocalyptic number.

It is an amenable number.

102249284 is a deficient number, since it is larger than the sum of its proper divisors (82459324).

102249284 is a wasteful number, since it uses less digits than its factorization.

102249284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824626 (or 824624 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 102249284 is about 10111.8388040949. The cubic root of 102249284 is about 467.6131961113.

The spelling of 102249284 in words is "one hundred two million, two hundred forty-nine thousand, two hundred eighty-four".