20942528 has 28 divisors (see below), whose sum is σ = 41724072. Its totient is φ = 10429440.

The previous prime is 20942527. The next prime is 20942557. The reversal of 20942528 is 82524902.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 20942494 and 20942503.

It is not an unprimeable number, because it can be changed into a prime (20942527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21083 + ... + 22053.

Almost surely, 2^20942528 is an apocalyptic number.

It is an amenable number.

20942528 is a deficient number, since it is larger than the sum of its proper divisors (20781544).

20942528 is an equidigital number, since it uses as much as digits as its factorization.

20942528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20942528 is about 4576.3006894215. The cubic root of 20942528 is about 275.6405037359.

The spelling of 20942528 in words is "twenty million, nine hundred forty-two thousand, five hundred twenty-eight".