20875528 has 16 divisors (see below), whose sum is σ = 41202000. Its totient is φ = 9888336.

The previous prime is 20875523. The next prime is 20875531. The reversal of 20875528 is 82557802.

It is not an unprimeable number, because it can be changed into a prime (20875523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68518 + ... + 68821.

It is an arithmetic number, because the mean of its divisors is an integer number (2575125).

Almost surely, 2^20875528 is an apocalyptic number.

It is an amenable number.

20875528 is a deficient number, since it is larger than the sum of its proper divisors (20326472).

20875528 is a wasteful number, since it uses less digits than its factorization.

20875528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137364 (or 137360 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 20875528 is about 4568.9745020081. The cubic root of 20875528 is about 275.3462437623.

Subtracting from 20875528 its sum of digits (37), we obtain a triangular number (20875491 = T₆₄₆₁).

The spelling of 20875528 in words is "twenty million, eight hundred seventy-five thousand, five hundred twenty-eight".