276730520 has 64 divisors (see below), whose sum is σ = 680983200. Its totient is φ = 100372480.

The previous prime is 276730481. The next prime is 276730529. The reversal of 276730520 is 25037672.

It is a happy number.

276730520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276730529) 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 15 ways as a sum of consecutive naturals, for example, 297416 + ... + 298344.

Almost surely, 2^276730520 is an apocalyptic number.

276730520 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 276730520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340491600).

276730520 is an abundant number, since it is smaller than the sum of its proper divisors (404252680).

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

276730520 is a wasteful number, since it uses less digits than its factorization.

276730520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628 (or 1624 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 276730520 is about 16635.2192651615. The cubic root of 276730520 is about 651.6569324434.

The spelling of 276730520 in words is "two hundred seventy-six million, seven hundred thirty thousand, five hundred twenty".