20798528 has 14 divisors (see below), whose sum is σ = 41272206. Its totient is φ = 10399232.

The previous prime is 20798507. The next prime is 20798543. The reversal of 20798528 is 82589702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15745024 + 5053504 = 3968^2 + 2248^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162425 + ... + 162552.

Almost surely, 2^20798528 is an apocalyptic number.

It is an amenable number.

20798528 is a deficient number, since it is larger than the sum of its proper divisors (20473678).

20798528 is an equidigital number, since it uses as much as digits as its factorization.

20798528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324989 (or 324979 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 20798528 is about 4560.5403188657. The cubic root of 20798528 is about 275.0072857574.

The spelling of 20798528 in words is "twenty million, seven hundred ninety-eight thousand, five hundred twenty-eight".