20528264 has 16 divisors (see below), whose sum is σ = 39066000. Its totient is φ = 10110672.

The previous prime is 20528251. The next prime is 20528267. The reversal of 20528264 is 46282502.

It is not an unprimeable number, because it can be changed into a prime (20528267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18614 + ... + 19685.

It is an arithmetic number, because the mean of its divisors is an integer number (2441625).

Almost surely, 2^20528264 is an apocalyptic number.

It is an amenable number.

20528264 is a deficient number, since it is larger than the sum of its proper divisors (18537736).

20528264 is a wasteful number, since it uses less digits than its factorization.

20528264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38372 (or 38368 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 20528264 is about 4530.8127306257. The cubic root of 20528264 is about 273.8109054590.

The spelling of 20528264 in words is "twenty million, five hundred twenty-eight thousand, two hundred sixty-four".