275247120 has 160 divisors (see below), whose sum is σ = 896728320. Its totient is φ = 69744640.

The previous prime is 275247097. The next prime is 275247131. The reversal of 275247120 is 21742572.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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, 493882 + ... + 494438.

It is an arithmetic number, because the mean of its divisors is an integer number (5604552).

Almost surely, 2^275247120 is an apocalyptic number.

275247120 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 275247120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448364160).

275247120 is an abundant number, since it is smaller than the sum of its proper divisors (621481200).

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

275247120 is a wasteful number, since it uses less digits than its factorization.

275247120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 275247120 is about 16590.5732269865. The cubic root of 275247120 is about 650.4904542946.

Adding to 275247120 its reverse (21742572), we get a palindrome (296989692).

The spelling of 275247120 in words is "two hundred seventy-five million, two hundred forty-seven thousand, one hundred twenty".