275430240 has 192 divisors, whose sum is σ = 974937600. Its totient is φ = 72617472.

The previous prime is 275430227. The next prime is 275430301. The reversal of 275430240 is 42034572.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 444651 + ... + 445269.

It is an arithmetic number, because the mean of its divisors is an integer number (5077800).

Almost surely, 2^275430240 is an apocalyptic number.

275430240 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 275430240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487468800).

275430240 is an abundant number, since it is smaller than the sum of its proper divisors (699507360).

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

275430240 is a wasteful number, since it uses less digits than its factorization.

275430240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 275430240 is about 16596.0911060406. The cubic root of 275430240 is about 650.6346779117.

The spelling of 275430240 in words is "two hundred seventy-five million, four hundred thirty thousand, two hundred forty".