260208138 has 16 divisors (see below), whose sum is σ = 521838720. Its totient is φ = 86498976.

The previous prime is 260208133. The next prime is 260208149. The reversal of 260208138 is 831802062.

It is not an unprimeable number, because it can be changed into a prime (260208133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56883 + ... + 61286.

It is an arithmetic number, because the mean of its divisors is an integer number (32614920).

Almost surely, 2^260208138 is an apocalyptic number.

260208138 is an abundant number, since it is smaller than the sum of its proper divisors (261630582).

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

260208138 is a wasteful number, since it uses less digits than its factorization.

260208138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118541.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 260208138 is about 16130.9682908373. The cubic root of 260208138 is about 638.4206974951.

The spelling of 260208138 in words is "two hundred sixty million, two hundred eight thousand, one hundred thirty-eight".