275722920 has 128 divisors (see below), whose sum is σ = 1002672000. Its totient is φ = 66839040.

The previous prime is 275722903. The next prime is 275722921. The reversal of 275722920 is 29227572.

It is a super-5 number, since 5×275722920⁵ (a number of 43 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (275722921) 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 31 ways as a sum of consecutive naturals, for example, 276 + ... + 23484.

It is an arithmetic number, because the mean of its divisors is an integer number (7833375).

Almost surely, 2^275722920 is an apocalyptic number.

275722920 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 275722920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501336000).

275722920 is an abundant number, since it is smaller than the sum of its proper divisors (726949080).

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

275722920 is a wasteful number, since it uses less digits than its factorization.

275722920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23240 (or 23230 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 275722920 is about 16604.9065038018. The cubic root of 275722920 is about 650.8650572944.

The spelling of 275722920 in words is "two hundred seventy-five million, seven hundred twenty-two thousand, nine hundred twenty".