275789280 has 192 divisors, whose sum is σ = 944516160. Its totient is φ = 67239936.

The previous prime is 275789257. The next prime is 275789281. The reversal of 275789280 is 82987572.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275789281) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1204206 + ... + 1204434.

It is an arithmetic number, because the mean of its divisors is an integer number (4919355).

Almost surely, 2^275789280 is an apocalyptic number.

275789280 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 275789280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472258080).

275789280 is an abundant number, since it is smaller than the sum of its proper divisors (668726880).

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

275789280 is a wasteful number, since it uses less digits than its factorization.

275789280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 275789280 is about 16606.9045881525. The cubic root of 275789280 is about 650.9172690590.

The spelling of 275789280 in words is "two hundred seventy-five million, seven hundred eighty-nine thousand, two hundred eighty".