260156556 has 48 divisors (see below), whose sum is σ = 735799680. Its totient is φ = 78834960.

The previous prime is 260156551. The next prime is 260156563. The reversal of 260156556 is 655651062.

It is a happy number.

It is a super-2 number, since 2×260156556² = 135362867259562272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 260156556.

It is not an unprimeable number, because it can be changed into a prime (260156551) 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 15 ways as a sum of consecutive naturals, for example, 108306 + ... + 110681.

It is an arithmetic number, because the mean of its divisors is an integer number (15329160).

Almost surely, 2^260156556 is an apocalyptic number.

It is an amenable number.

260156556 is an abundant number, since it is smaller than the sum of its proper divisors (475643124).

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

260156556 is a wasteful number, since it uses less digits than its factorization.

260156556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219011 (or 219003 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 260156556 is about 16129.3693615095. The cubic root of 260156556 is about 638.3785092262.

It can be divided in two parts, 260 and 156556, that added together give a square (156816 = 396²).

The spelling of 260156556 in words is "two hundred sixty million, one hundred fifty-six thousand, five hundred fifty-six".