275979960 has 96 divisors (see below), whose sum is σ = 930187440. Its totient is φ = 73592064.

The previous prime is 275979953. The next prime is 275979973. The reversal of 275979960 is 69979572.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 275979897 and 275979906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4477 + ... + 23916.

Almost surely, 2^275979960 is an apocalyptic number.

275979960 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 275979960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465093720).

275979960 is an abundant number, since it is smaller than the sum of its proper divisors (654207480).

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

275979960 is a wasteful number, since it uses less digits than its factorization.

275979960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28419 (or 28403 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The square root of 275979960 is about 16612.6445817636. The cubic root of 275979960 is about 651.0672486753.

The spelling of 275979960 in words is "two hundred seventy-five million, nine hundred seventy-nine thousand, nine hundred sixty".