102243988 has 72 divisors (see below), whose sum is σ = 232122240. Its totient is φ = 38949120.

The previous prime is 102243929. The next prime is 102243989. The reversal of 102243988 is 889342201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102243989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100828 + ... + 101836.

It is an arithmetic number, because the mean of its divisors is an integer number (3223920).

Almost surely, 2^102243988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102243988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116061120).

102243988 is an abundant number, since it is smaller than the sum of its proper divisors (129878252).

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

102243988 is a wasteful number, since it uses less digits than its factorization.

102243988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 102243988 is about 10111.5769294408. The cubic root of 102243988 is about 467.6051226326.

The spelling of 102243988 in words is "one hundred two million, two hundred forty-three thousand, nine hundred eighty-eight".