276665340 has 96 divisors (see below), whose sum is σ = 894587904. Its totient is φ = 62576640.

The previous prime is 276665339. The next prime is 276665369. The reversal of 276665340 is 43566672.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37345 + ... + 44135.

It is an arithmetic number, because the mean of its divisors is an integer number (9318624).

Almost surely, 2^276665340 is an apocalyptic number.

276665340 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 276665340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447293952).

276665340 is an abundant number, since it is smaller than the sum of its proper divisors (617922564).

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

276665340 is a wasteful number, since it uses less digits than its factorization.

276665340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6907 (or 6905 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 276665340 is about 16633.2600532788. The cubic root of 276665340 is about 651.6057655367.

The spelling of 276665340 in words is "two hundred seventy-six million, six hundred sixty-five thousand, three hundred forty".