102191080 has 64 divisors (see below), whose sum is σ = 247199040. Its totient is φ = 37880832.

The previous prime is 102191071. The next prime is 102191083. The reversal of 102191080 is 80191201.

It is not an unprimeable number, because it can be changed into a prime (102191083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44439 + ... + 46681.

It is an arithmetic number, because the mean of its divisors is an integer number (3862485).

Almost surely, 2^102191080 is an apocalyptic number.

102191080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102191080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123599520).

102191080 is an abundant number, since it is smaller than the sum of its proper divisors (145007960).

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

102191080 is a wasteful number, since it uses less digits than its factorization.

102191080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338 (or 2334 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 102191080 is about 10108.9603817603. The cubic root of 102191080 is about 467.5244518081.

The spelling of 102191080 in words is "one hundred two million, one hundred ninety-one thousand, eighty".