20945528 has 8 divisors (see below), whose sum is σ = 39272880. Its totient is φ = 10472760.

The previous prime is 20945521. The next prime is 20945537. The reversal of 20945528 is 82554902.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20945521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1309088 + ... + 1309103.

It is an arithmetic number, because the mean of its divisors is an integer number (4909110).

Almost surely, 2^20945528 is an apocalyptic number.

It is an amenable number.

20945528 is a deficient number, since it is larger than the sum of its proper divisors (18327352).

20945528 is a wasteful number, since it uses less digits than its factorization.

20945528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618197 (or 2618193 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 20945528 is about 4576.6284533486. The cubic root of 20945528 is about 275.6536648664.

The spelling of 20945528 in words is "twenty million, nine hundred forty-five thousand, five hundred twenty-eight".