531028224 has 90 divisors (see below), whose sum is σ = 1583491910. Its totient is φ = 177002496.

The previous prime is 531028213. The next prime is 531028229. The reversal of 531028224 is 422820135.

It can be written as a sum of positive squares in only one way, i.e., 530841600 + 186624 = 23040^2 + 432^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (531028229) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7932 + ... + 33540.

Almost surely, 2^531028224 is an apocalyptic number.

531028224 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531028224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791745955).

531028224 is an abundant number, since it is smaller than the sum of its proper divisors (1052463686).

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

531028224 is an equidigital number, since it uses as much as digits as its factorization.

531028224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25637 (or 25614 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 531028224 is about 23044.0496441055. The cubic root of 531028224 is about 809.7902337472.

Adding to 531028224 its reverse (422820135), we get a palindrome (953848359).

The spelling of 531028224 in words is "five hundred thirty-one million, twenty-eight thousand, two hundred twenty-four".