20830528 has 14 divisors (see below), whose sum is σ = 41335706. Its totient is φ = 10415232.

The previous prime is 20830507. The next prime is 20830529. The reversal of 20830528 is 82503802.

It can be written as a sum of positive squares in only one way, i.e., 19998784 + 831744 = 4472^2 + 912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20830496 and 20830505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20830529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162675 + ... + 162802.

Almost surely, 2^20830528 is an apocalyptic number.

It is an amenable number.

20830528 is a deficient number, since it is larger than the sum of its proper divisors (20505178).

20830528 is an equidigital number, since it uses as much as digits as its factorization.

20830528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325489 (or 325479 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20830528 is about 4564.0473266608. The cubic root of 20830528 is about 275.1482528447.

The spelling of 20830528 in words is "twenty million, eight hundred thirty thousand, five hundred twenty-eight".