276240978 has 72 divisors (see below), whose sum is σ = 657745920. Its totient is φ = 83734560.

The previous prime is 276240977. The next prime is 276240983. The reversal of 276240978 is 879042672.

It is not an unprimeable number, because it can be changed into a prime (276240977) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 215343 + ... + 216621.

It is an arithmetic number, because the mean of its divisors is an integer number (9135360).

Almost surely, 2^276240978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276240978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328872960).

276240978 is an abundant number, since it is smaller than the sum of its proper divisors (381504942).

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

276240978 is a wasteful number, since it uses less digits than its factorization.

276240978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 276240978 is about 16620.4987289792. The cubic root of 276240978 is about 651.2724407763.

The spelling of 276240978 in words is "two hundred seventy-six million, two hundred forty thousand, nine hundred seventy-eight".