276742656 has 100 divisors (see below), whose sum is σ = 826127742. Its totient is φ = 92233728.

The previous prime is 276742651. The next prime is 276742663. The reversal of 276742656 is 656247672.

It can be written as a sum of positive squares in only one way, i.e., 274233600 + 2509056 = 16560^2 + 1584^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276742651) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38136 + ... + 44808.

Almost surely, 2^276742656 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 276742656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413063871).

276742656 is an abundant number, since it is smaller than the sum of its proper divisors (549385086).

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

276742656 is an frugal number, since it uses more digits than its factorization.

276742656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6703 (or 6678 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 276742656 is about 16635.5840294232. The cubic root of 276742656 is about 651.6664584291. Note that the first 3 decimals are identical.

The spelling of 276742656 in words is "two hundred seventy-six million, seven hundred forty-two thousand, six hundred fifty-six".