260138026 has 4 divisors (see below), whose sum is σ = 390207042. Its totient is φ = 130069012.

The previous prime is 260138023. The next prime is 260138093. The reversal of 260138026 is 620831062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 245705625 + 14432401 = 15675^2 + 3799^2 .

It is a junction number, because it is equal to n+sod(n) for n = 260137985 and 260138003.

It is not an unprimeable number, because it can be changed into a prime (260138023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65034505 + ... + 65034508.

Almost surely, 2^260138026 is an apocalyptic number.

260138026 is a deficient number, since it is larger than the sum of its proper divisors (130069016).

260138026 is a wasteful number, since it uses less digits than its factorization.

260138026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130069015.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 260138026 is about 16128.7949332862. The cubic root of 260138026 is about 638.3633524109.

Adding to 260138026 its reverse (620831062), we get a palindrome (880969088).

The spelling of 260138026 in words is "two hundred sixty million, one hundred thirty-eight thousand, twenty-six".