535121728 has 14 divisors (see below), whose sum is σ = 1061882306. Its totient is φ = 267560832.

The previous prime is 535121711. The next prime is 535121731. The reversal of 535121728 is 827121535.

It can be written as a sum of positive squares in only one way, i.e., 315133504 + 219988224 = 17752^2 + 14832^2 .

It is a junction number, because it is equal to n+sod(n) for n = 535121693 and 535121702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4180575 + ... + 4180702.

Almost surely, 2^535121728 is an apocalyptic number.

It is an amenable number.

535121728 is a deficient number, since it is larger than the sum of its proper divisors (526760578).

535121728 is an equidigital number, since it uses as much as digits as its factorization.

535121728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8361289 (or 8361279 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 535121728 is about 23132.6982429634. The cubic root of 535121728 is about 811.8657029145.

The spelling of 535121728 in words is "five hundred thirty-five million, one hundred twenty-one thousand, seven hundred twenty-eight".