275620420 has 24 divisors (see below), whose sum is σ = 579691224. Its totient is φ = 110078976.

The previous prime is 275620417. The next prime is 275620427. The reversal of 275620420 is 24026572.

It can be written as a sum of positive squares in 4 ways, for example, as 39137536 + 236482884 = 6256^2 + 15378^2 .

It is not an unprimeable number, because it can be changed into a prime (275620427) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3222 + ... + 23698.

It is an arithmetic number, because the mean of its divisors is an integer number (24153801).

Almost surely, 2^275620420 is an apocalyptic number.

275620420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275620420 is an abundant number, since it is smaller than the sum of its proper divisors (304070804).

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

275620420 is a wasteful number, since it uses less digits than its factorization.

275620420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21159 (or 21157 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 275620420 is about 16601.8197797711. The cubic root of 275620420 is about 650.7843942662.

Adding to 275620420 its reverse (24026572), we get a palindrome (299646992).

The spelling of 275620420 in words is "two hundred seventy-five million, six hundred twenty thousand, four hundred twenty".