275828280 has 384 divisors, whose sum is σ = 1075161600. Its totient is φ = 55351296.

The previous prime is 275828261. The next prime is 275828323. The reversal of 275828280 is 82828572.

275828280 = T₁₆₉ + T₁₇₀ + ... + T₁₁₈₃.

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4116807 + ... + 4116873.

It is an arithmetic number, because the mean of its divisors is an integer number (2799900).

Almost surely, 2^275828280 is an apocalyptic number.

275828280 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 275828280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537580800).

275828280 is an abundant number, since it is smaller than the sum of its proper divisors (799333320).

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

275828280 is a wasteful number, since it uses less digits than its factorization.

275828280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 275828280 is about 16608.0787570387. The cubic root of 275828280 is about 650.9479501850.

The spelling of 275828280 in words is "two hundred seventy-five million, eight hundred twenty-eight thousand, two hundred eighty".