276630648 has 128 divisors (see below), whose sum is σ = 819486720. Its totient is φ = 76170240.

The previous prime is 276630589. The next prime is 276630659. The reversal of 276630648 is 846036672.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 1187140 + ... + 1187372.

It is an arithmetic number, because the mean of its divisors is an integer number (6402240).

Almost surely, 2^276630648 is an apocalyptic number.

276630648 is a gapful number since it is divisible by the number (28) 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 276630648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409743360).

276630648 is an abundant number, since it is smaller than the sum of its proper divisors (542856072).

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

276630648 is a wasteful number, since it uses less digits than its factorization.

276630648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 276630648 is about 16632.2171702993. The cubic root of 276630648 is about 651.5785287168.

The spelling of 276630648 in words is "two hundred seventy-six million, six hundred thirty thousand, six hundred forty-eight".