102189240 has 48 divisors (see below), whose sum is σ = 332116200. Its totient is φ = 27250368.

The previous prime is 102189229. The next prime is 102189289. The reversal of 102189240 is 42981201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141570 + ... + 142289.

Almost surely, 2^102189240 is an apocalyptic number.

102189240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102189240 is an abundant number, since it is smaller than the sum of its proper divisors (229926960).

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

102189240 is a wasteful number, since it uses less digits than its factorization.

102189240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283876 (or 283869 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 102189240 is about 10108.8693729813. The cubic root of 102189240 is about 467.5216457897.

The spelling of 102189240 in words is "one hundred two million, one hundred eighty-nine thousand, two hundred forty".