275148820 has 12 divisors (see below), whose sum is σ = 577812564. Its totient is φ = 110059520.

The previous prime is 275148817. The next prime is 275148821. The reversal of 275148820 is 28841572.

It can be written as a sum of positive squares in 2 ways, for example, as 65999376 + 209149444 = 8124^2 + 14462^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 275148820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275148821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6878701 + ... + 6878740.

It is an arithmetic number, because the mean of its divisors is an integer number (48151047).

Almost surely, 2^275148820 is an apocalyptic number.

275148820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275148820 is an abundant number, since it is smaller than the sum of its proper divisors (302663744).

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

275148820 is a wasteful number, since it uses less digits than its factorization.

275148820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13757450 (or 13757448 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 275148820 is about 16587.6104367085. The cubic root of 275148820 is about 650.4130077377.

The spelling of 275148820 in words is "two hundred seventy-five million, one hundred forty-eight thousand, eight hundred twenty".