528428779 has 8 divisors (see below), whose sum is σ = 559040000. Its totient is φ = 498097512.

The previous prime is 528428777. The next prime is 528428827. The reversal of 528428779 is 977824825.

It is a happy number.

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 528428779 - 2¹ = 528428777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (528428777) 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, 66099 + ... + 73660.

It is an arithmetic number, because the mean of its divisors is an integer number (69880000).

Almost surely, 2^528428779 is an apocalyptic number.

528428779 is a deficient number, since it is larger than the sum of its proper divisors (30611221).

528428779 is a wasteful number, since it uses less digits than its factorization.

528428779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139977.

The product of its digits is 2257920, while the sum is 52.

The square root of 528428779 is about 22987.5787981249. The cubic root of 528428779 is about 808.4667326608.

The spelling of 528428779 in words is "five hundred twenty-eight million, four hundred twenty-eight thousand, seven hundred seventy-nine".