528526404 has 96 divisors (see below), whose sum is σ = 1585059840. Its totient is φ = 149170464.

The previous prime is 528526403. The next prime is 528526429. The reversal of 528526404 is 404625825.

It is a happy number.

528526404 is a `hidden beast` number, since 5 + 2 + 8 + 5 + 2 + 640 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (528526403) 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, 58537 + ... + 66959.

It is an arithmetic number, because the mean of its divisors is an integer number (16511040).

Almost surely, 2^528526404 is an apocalyptic number.

528526404 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 528526404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792529920).

528526404 is an abundant number, since it is smaller than the sum of its proper divisors (1056533436).

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

528526404 is a wasteful number, since it uses less digits than its factorization.

528526404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8526 (or 8518 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 528526404 is about 22989.7021294318. The cubic root of 528526404 is about 808.5165165409.

The spelling of 528526404 in words is "five hundred twenty-eight million, five hundred twenty-six thousand, four hundred four".