275280030 has 24 divisors (see below), whose sum is σ = 715728312. Its totient is φ = 73407984.

The previous prime is 275280013. The next prime is 275280053. The reversal of 275280030 is 30082572.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 275279976 and 275280003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1529244 + ... + 1529423.

It is an arithmetic number, because the mean of its divisors is an integer number (29822013).

Almost surely, 2^275280030 is an apocalyptic number.

275280030 is an abundant number, since it is smaller than the sum of its proper divisors (440448282).

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

275280030 is a wasteful number, since it uses less digits than its factorization.

275280030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058680 (or 3058677 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 275280030 is about 16591.5650256388. The cubic root of 275280030 is about 650.5163786200.

The spelling of 275280030 in words is "two hundred seventy-five million, two hundred eighty thousand, thirty".