276409056 has 192 divisors, whose sum is σ = 920941056. Its totient is φ = 70502400.

The previous prime is 276409033. The next prime is 276409061. The reversal of 276409056 is 650904672.

It is a super-2 number, since 2×276409056² = 152803932477622272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 450606 + ... + 451218.

It is an arithmetic number, because the mean of its divisors is an integer number (4796568).

Almost surely, 2^276409056 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 276409056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460470528).

276409056 is an abundant number, since it is smaller than the sum of its proper divisors (644532000).

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

276409056 is a wasteful number, since it uses less digits than its factorization.

276409056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 276409056 is about 16625.5543065487. The cubic root of 276409056 is about 651.4045022545.

The spelling of 276409056 in words is "two hundred seventy-six million, four hundred nine thousand, fifty-six".