4000528 has 40 divisors (see below), whose sum is σ = 9249408. Its totient is φ = 1638912.

The previous prime is 4000523. The next prime is 4000541. The reversal of 4000528 is 8250004.

It is a happy number.

4000528 is a modest number, since divided by 528 gives 400 as remainder.

It is not an unprimeable number, because it can be changed into a prime (4000523) 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, 1800 + ... + 3352.

Almost surely, 2^4000528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4000528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4624704).

4000528 is an abundant number, since it is smaller than the sum of its proper divisors (5248880).

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

4000528 is a wasteful number, since it uses less digits than its factorization.

4000528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 4000528 is about 2000.1319956443. The cubic root of 4000528 is about 158.7470894542.

The spelling of 4000528 in words is "four million, five hundred twenty-eight", and thus it is an aban number.