102278660 has 48 divisors (see below), whose sum is σ = 236682432. Its totient is φ = 36816000.

The previous prime is 102278633. The next prime is 102278689. The reversal of 102278660 is 66872201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19919 + ... + 24521.

It is an arithmetic number, because the mean of its divisors is an integer number (4930884).

Almost surely, 2^102278660 is an apocalyptic number.

102278660 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 102278660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118341216).

102278660 is an abundant number, since it is smaller than the sum of its proper divisors (134403772).

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

102278660 is a wasteful number, since it uses less digits than its factorization.

102278660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724 (or 4722 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 102278660 is about 10113.2912545818. The cubic root of 102278660 is about 467.6579732463.

The spelling of 102278660 in words is "one hundred two million, two hundred seventy-eight thousand, six hundred sixty".