260828278 has 4 divisors (see below), whose sum is σ = 391242420. Its totient is φ = 130414138.

The previous prime is 260828261. The next prime is 260828287. The reversal of 260828278 is 872828062.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65207068 + ... + 65207071.

It is an arithmetic number, because the mean of its divisors is an integer number (97810605).

Almost surely, 2^260828278 is an apocalyptic number.

260828278 is a deficient number, since it is larger than the sum of its proper divisors (130414142).

260828278 is a wasteful number, since it uses less digits than its factorization.

260828278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130414141.

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 260828278 is about 16150.1788844582. The cubic root of 260828278 is about 638.9274663111.

The spelling of 260828278 in words is "two hundred sixty million, eight hundred twenty-eight thousand, two hundred seventy-eight".