275313728 has 56 divisors (see below), whose sum is σ = 567659520. Its totient is φ = 132341760.

The previous prime is 275313721. The next prime is 275313737. The reversal of 275313728 is 827313572.

It is a junction number, because it is equal to n+sod(n) for n = 275313691 and 275313700.

It is not an unprimeable number, because it can be changed into a prime (275313721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382553 + ... + 383271.

Almost surely, 2^275313728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275313728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283829760).

275313728 is an abundant number, since it is smaller than the sum of its proper divisors (292345792).

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

275313728 is a wasteful number, since it uses less digits than its factorization.

275313728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 945 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 275313728 is about 16592.5805105776. The cubic root of 275313728 is about 650.5429215389.

The spelling of 275313728 in words is "two hundred seventy-five million, three hundred thirteen thousand, seven hundred twenty-eight".