275209000 has 128 divisors (see below), whose sum is σ = 711659520. Its totient is φ = 98784000.

The previous prime is 275208991. The next prime is 275209013. The reversal of 275209000 is 902572.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 1396902 + ... + 1397098.

It is an arithmetic number, because the mean of its divisors is an integer number (5559840).

Almost surely, 2^275209000 is an apocalyptic number.

275209000 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 275209000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355829760).

275209000 is an abundant number, since it is smaller than the sum of its proper divisors (436450520).

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

275209000 is a wasteful number, since it uses less digits than its factorization.

275209000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 275209000 is about 16589.4243420319. The cubic root of 275209000 is about 650.4604232920.

The spelling of 275209000 in words is "two hundred seventy-five million, two hundred nine thousand".