2009528 has 8 divisors (see below), whose sum is σ = 3767880. Its totient is φ = 1004760.

The previous prime is 2009509. The next prime is 2009537. The reversal of 2009528 is 8259002.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2009497 and 2009506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125588 + ... + 125603.

It is an arithmetic number, because the mean of its divisors is an integer number (470985).

2^2009528 is an apocalyptic number.

It is an amenable number.

2009528 is a deficient number, since it is larger than the sum of its proper divisors (1758352).

2009528 is a wasteful number, since it uses less digits than its factorization.

2009528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251197 (or 251193 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 2009528 is about 1417.5782165369. The cubic root of 2009528 is about 126.1918635706.

The spelling of 2009528 in words is "two million, nine thousand, five hundred twenty-eight".