102406280 has 16 divisors (see below), whose sum is σ = 230414220. Its totient is φ = 40962496.

The previous prime is 102406253. The next prime is 102406289. The reversal of 102406280 is 82604201.

It can be written as a sum of positive squares in 2 ways, for example, as 96864964 + 5541316 = 9842^2 + 2354^2 .

It is not an unprimeable number, because it can be changed into a prime (102406289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1280039 + ... + 1280118.

Almost surely, 2^102406280 is an apocalyptic number.

102406280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102406280 is an abundant number, since it is smaller than the sum of its proper divisors (128007940).

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

102406280 is a wasteful number, since it uses less digits than its factorization.

102406280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560168 (or 2560164 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 102406280 is about 10119.5988062769. The cubic root of 102406280 is about 467.8524018932.

The spelling of 102406280 in words is "one hundred two million, four hundred six thousand, two hundred eighty".