260556426 has 120 divisors (see below), whose sum is σ = 654724224. Its totient is φ = 77332320.

The previous prime is 260556419. The next prime is 260556431. The reversal of 260556426 is 624655062.

260556426 is a `hidden beast` number, since 2 + 6 + 0 + 5 + 5 + 642 + 6 = 666.

It is a super-2 number, since 2×260556426² = 135779302259786952, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 848565 + ... + 848871.

Almost surely, 2^260556426 is an apocalyptic number.

260556426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 260556426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327362112).

260556426 is an abundant number, since it is smaller than the sum of its proper divisors (394167798).

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

260556426 is a wasteful number, since it uses less digits than its factorization.

260556426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 260556426 is about 16141.7603129275. The cubic root of 260556426 is about 638.7054120527.

The spelling of 260556426 in words is "two hundred sixty million, five hundred fifty-six thousand, four hundred twenty-six".