538149528 has 128 divisors (see below), whose sum is σ = 1720051200. Its totient is φ = 152710272.

The previous prime is 538149527. The next prime is 538149529. The reversal of 538149528 is 825941835.

538149528 is a `hidden beast` number, since 5 + 3 + 81 + 49 + 528 = 666.

It is an interprime number because it is at equal distance from previous prime (538149527) and next prime (538149529).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538149523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236251 + ... + 238517.

It is an arithmetic number, because the mean of its divisors is an integer number (13437900).

Almost surely, 2^538149528 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 538149528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860025600).

538149528 is an abundant number, since it is smaller than the sum of its proper divisors (1181901672).

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

538149528 is a wasteful number, since it uses less digits than its factorization.

538149528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446 (or 2436 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 538149528 is about 23198.0500904710. The cubic root of 538149528 is about 813.3940438124.

The spelling of 538149528 in words is "five hundred thirty-eight million, one hundred forty-nine thousand, five hundred twenty-eight".