20528782 has 16 divisors (see below), whose sum is σ = 31953600. Its totient is φ = 9884160.

The previous prime is 20528777. The next prime is 20528819. The reversal of 20528782 is 28782502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4894 + ... + 8062.

It is an arithmetic number, because the mean of its divisors is an integer number (1997100).

Almost surely, 2^20528782 is an apocalyptic number.

20528782 is a deficient number, since it is larger than the sum of its proper divisors (11424818).

20528782 is a wasteful number, since it uses less digits than its factorization.

20528782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 20528782 is about 4530.8698944022. The cubic root of 20528782 is about 273.8132085090.

The spelling of 20528782 in words is "twenty million, five hundred twenty-eight thousand, seven hundred eighty-two".