528728011 has 8 divisors (see below), whose sum is σ = 611541504. Its totient is φ = 447734760.

The previous prime is 528728009. The next prime is 528728023. The reversal of 528728011 is 110827825.

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

It is a cyclic number.

It is not a de Polignac number, because 528728011 - 2¹ = 528728009 is a prime.

It is a super-2 number, since 2×528728011² = 559106619232032242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (528728911) 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, 454435 + ... + 455596.

It is an arithmetic number, because the mean of its divisors is an integer number (76442688).

Almost surely, 2^528728011 is an apocalyptic number.

528728011 is a deficient number, since it is larger than the sum of its proper divisors (82813493).

528728011 is an equidigital number, since it uses as much as digits as its factorization.

528728011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910121.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 528728011 is about 22994.0864354294. The cubic root of 528728011 is about 808.6193066548.

The spelling of 528728011 in words is "five hundred twenty-eight million, seven hundred twenty-eight thousand, eleven".