13082778 has 48 divisors (see below), whose sum is σ = 29352960. Its totient is φ = 4209408.

The previous prime is 13082777. The next prime is 13082789. The reversal of 13082778 is 87728031.

It is not an unprimeable number, because it can be changed into a prime (13082777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102951 + ... + 103077.

It is an arithmetic number, because the mean of its divisors is an integer number (611520).

Almost surely, 2^13082778 is an apocalyptic number.

13082778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13082778 is an abundant number, since it is smaller than the sum of its proper divisors (16270182).

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

13082778 is a wasteful number, since it uses less digits than its factorization.

13082778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 13082778 is about 3617.0123029926. The cubic root of 13082778 is about 235.6314870150.

The spelling of 13082778 in words is "thirteen million, eighty-two thousand, seven hundred seventy-eight".