276052640 has 48 divisors (see below), whose sum is σ = 656009928. Its totient is φ = 109771776.

The previous prime is 276052627. The next prime is 276052709. The reversal of 276052640 is 46250672.

It can be written as a sum of positive squares in 4 ways, for example, as 226321936 + 49730704 = 15044^2 + 7052^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 276052597 and 276052606.

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 7 ways as a sum of consecutive naturals, for example, 22694 + ... + 32666.

Almost surely, 2^276052640 is an apocalyptic number.

276052640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276052640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328004964).

276052640 is an abundant number, since it is smaller than the sum of its proper divisors (379957288).

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

276052640 is a wasteful number, since it uses less digits than its factorization.

276052640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161 (or 10153 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 276052640 is about 16614.8319281298. The cubic root of 276052640 is about 651.1243970449.

The spelling of 276052640 in words is "two hundred seventy-six million, fifty-two thousand, six hundred forty".