12772578 has 64 divisors (see below), whose sum is σ = 31852800. Its totient is φ = 3324672.

The previous prime is 12772553. The next prime is 12772597. The reversal of 12772578 is 87527721.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 81276 + ... + 81432.

It is an arithmetic number, because the mean of its divisors is an integer number (497700).

Almost surely, 2^12772578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12772578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15926400).

12772578 is an abundant number, since it is smaller than the sum of its proper divisors (19080222).

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

12772578 is a wasteful number, since it uses less digits than its factorization.

12772578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331.

The product of its digits is 54880, while the sum is 39.

The square root of 12772578 is about 3573.8743682452. The cubic root of 12772578 is about 233.7542529277.

The spelling of 12772578 in words is "twelve million, seven hundred seventy-two thousand, five hundred seventy-eight".