275491048 has 64 divisors (see below), whose sum is σ = 625996800. Its totient is φ = 111144960.

The previous prime is 275491043. The next prime is 275491109. The reversal of 275491048 is 840194572.

It is a self number, because there is not a number n which added to its sum of digits gives 275491048.

It is not an unprimeable number, because it can be changed into a prime (275491043) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 62088 + ... + 66376.

It is an arithmetic number, because the mean of its divisors is an integer number (9781200).

Almost surely, 2^275491048 is an apocalyptic number.

275491048 is a gapful number since it is divisible by the number (28) 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 275491048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312998400).

275491048 is an abundant number, since it is smaller than the sum of its proper divisors (350505752).

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

275491048 is a wasteful number, since it uses less digits than its factorization.

275491048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370 (or 4366 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 275491048 is about 16597.9230025928. The cubic root of 275491048 is about 650.6825555912.

The spelling of 275491048 in words is "two hundred seventy-five million, four hundred ninety-one thousand, forty-eight".