260537220 has 36 divisors (see below), whose sum is σ = 790296780. Its totient is φ = 69476544.

The previous prime is 260537213. The next prime is 260537227. The reversal of 260537220 is 22735062.

260537220 is a `hidden beast` number, since 2 + 605 + 37 + 2 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (260537213) and next prime (260537227).

It can be written as a sum of positive squares in 2 ways, for example, as 174715524 + 85821696 = 13218^2 + 9264^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (260537227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 723535 + ... + 723894.

Almost surely, 2^260537220 is an apocalyptic number.

260537220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260537220 is an abundant number, since it is smaller than the sum of its proper divisors (529759560).

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

260537220 is a wasteful number, since it uses less digits than its factorization.

260537220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447444 (or 1447439 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 260537220 is about 16141.1653854361. The cubic root of 260537220 is about 638.6897183599.

The spelling of 260537220 in words is "two hundred sixty million, five hundred thirty-seven thousand, two hundred twenty".