531028 has 6 divisors (see below), whose sum is σ = 929306. Its totient is φ = 265512.

The previous prime is 531023. The next prime is 531043. The reversal of 531028 is 820135.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 283024 + 248004 = 532^2 + 498^2 .

It is a junction number, because it is equal to n+sod(n) for n = 530996 and 531014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66375 + ... + 66382.

2⁵³¹⁰²⁸ is an apocalyptic number.

It is an amenable number.

531028 is a deficient number, since it is larger than the sum of its proper divisors (398278).

531028 is a wasteful number, since it uses less digits than its factorization.

531028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132761 (or 132759 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 531028 is about 728.7166801988. The cubic root of 531028 is about 80.9790119884.

It can be divided in two parts, 53 and 1028, that added together give a triangular number (1081 = T₄₆).

The spelling of 531028 in words is "five hundred thirty-one thousand, twenty-eight".