260426440 has 16 divisors (see below), whose sum is σ = 585959580. Its totient is φ = 104170560.

The previous prime is 260426437. The next prime is 260426449. The reversal of 260426440 is 44624062.

260426440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 253382724 + 7043716 = 15918^2 + 2654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 260426399 and 260426408.

It is not an unprimeable number, because it can be changed into a prime (260426449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3255291 + ... + 3255370.

Almost surely, 2^260426440 is an apocalyptic number.

260426440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260426440 is an abundant number, since it is smaller than the sum of its proper divisors (325533140).

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

260426440 is a wasteful number, since it uses less digits than its factorization.

260426440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510672 (or 6510668 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 260426440 is about 16137.7334220144. The cubic root of 260426440 is about 638.5991822520.

The spelling of 260426440 in words is "two hundred sixty million, four hundred twenty-six thousand, four hundred forty".