528488391 has 8 divisors (see below), whose sum is σ = 714304240. Its totient is φ = 347499072.

The previous prime is 528488383. The next prime is 528488399. The reversal of 528488391 is 193884825.

It is an interprime number because it is at equal distance from previous prime (528488383) and next prime (528488399).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 528488391 - 2³ = 528488383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 528488391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528488399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1206376 + ... + 1206813.

It is an arithmetic number, because the mean of its divisors is an integer number (89288030).

Almost surely, 2^528488391 is an apocalyptic number.

528488391 is a deficient number, since it is larger than the sum of its proper divisors (185815849).

528488391 is a wasteful number, since it uses less digits than its factorization.

528488391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413265.

The product of its digits is 552960, while the sum is 48.

The square root of 528488391 is about 22988.8753748416. The cubic root of 528488391 is about 808.4971325360.

The spelling of 528488391 in words is "five hundred twenty-eight million, four hundred eighty-eight thousand, three hundred ninety-one".