538581312 has 84 divisors (see below), whose sum is σ = 1600968096. Its totient is φ = 179521920.

The previous prime is 538581311. The next prime is 538581341. The reversal of 538581312 is 213185835.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538581311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1764 + ... + 32867.

It is an arithmetic number, because the mean of its divisors is an integer number (19059144).

Almost surely, 2^538581312 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 538581312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (800484048).

538581312 is an abundant number, since it is smaller than the sum of its proper divisors (1062386784).

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

538581312 is an equidigital number, since it uses as much as digits as its factorization.

538581312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34658 (or 34636 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 538581312 is about 23207.3546963026. The cubic root of 538581312 is about 813.6115277558.

The spelling of 538581312 in words is "five hundred thirty-eight million, five hundred eighty-one thousand, three hundred twelve".