261676828 has 24 divisors (see below), whose sum is σ = 540237824. Its totient is φ = 108529200.

The previous prime is 261676817. The next prime is 261676837. The reversal of 261676828 is 828676162.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149868 + ... + 151603.

Almost surely, 2^261676828 is an apocalyptic number.

261676828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

261676828 is an abundant number, since it is smaller than the sum of its proper divisors (278560996).

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

261676828 is a wasteful number, since it uses less digits than its factorization.

261676828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301513 (or 301511 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 261676828 is about 16176.4281595166. The cubic root of 261676828 is about 639.6195883839.

The spelling of 261676828 in words is "two hundred sixty-one million, six hundred seventy-six thousand, eight hundred twenty-eight".