260321870 has 16 divisors (see below), whose sum is σ = 468920880. Its totient is φ = 104052864.

The previous prime is 260321851. The next prime is 260321879. The reversal of 260321870 is 78123062.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260321879) 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, 6149 + ... + 23631.

It is an arithmetic number, because the mean of its divisors is an integer number (29307555).

Almost surely, 2^260321870 is an apocalyptic number.

260321870 is a deficient number, since it is larger than the sum of its proper divisors (208599010).

260321870 is a wasteful number, since it uses less digits than its factorization.

260321870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18979.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 260321870 is about 16134.4931745624. The cubic root of 260321870 is about 638.5136977721.

The spelling of 260321870 in words is "two hundred sixty million, three hundred twenty-one thousand, eight hundred seventy".