102409800 has 192 divisors, whose sum is σ = 341228160. Its totient is φ = 25344000.

The previous prime is 102409793. The next prime is 102409837. The reversal of 102409800 is 8904201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 565710 + ... + 565890.

It is an arithmetic number, because the mean of its divisors is an integer number (1777230).

Almost surely, 2^102409800 is an apocalyptic number.

102409800 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 102409800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170614080).

102409800 is an abundant number, since it is smaller than the sum of its proper divisors (238818360).

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

102409800 is a wasteful number, since it uses less digits than its factorization.

102409800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 102409800 is about 10119.7727247206. The cubic root of 102409800 is about 467.8577623118.

The spelling of 102409800 in words is "one hundred two million, four hundred nine thousand, eight hundred".