274402656 has 144 divisors (see below), whose sum is σ = 874652688. Its totient is φ = 80870400.

The previous prime is 274402637. The next prime is 274402703. The reversal of 274402656 is 656204472.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 274402656.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 116046 + ... + 118386.

It is an arithmetic number, because the mean of its divisors is an integer number (6073977).

Almost surely, 2^274402656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 274402656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437326344).

274402656 is an abundant number, since it is smaller than the sum of its proper divisors (600250032).

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

274402656 is a wasteful number, since it uses less digits than its factorization.

274402656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2394 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 274402656 is about 16565.1035614028. The cubic root of 274402656 is about 649.8245333079.

The spelling of 274402656 in words is "two hundred seventy-four million, four hundred two thousand, six hundred fifty-six".