528407 has 8 divisors (see below), whose sum is σ = 582672. Its totient is φ = 479160.

The previous prime is 528403. The next prime is 528413. The reversal of 528407 is 704825.

It is not a de Polignac number, because 528407 - 2² = 528403 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a nialpdrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 528407.

It is not an unprimeable number, because it can be changed into a prime (528401) 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, 1133 + ... + 1529.

It is an arithmetic number, because the mean of its divisors is an integer number (72834).

2⁵²⁸⁴⁰⁷ is an apocalyptic number.

528407 is a deficient number, since it is larger than the sum of its proper divisors (54265).

528407 is an equidigital number, since it uses as much as digits as its factorization.

528407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 528407 is about 726.9160886925. The cubic root of 528407 is about 80.8455625621.

The spelling of 528407 in words is "five hundred twenty-eight thousand, four hundred seven".