20328552 has 48 divisors (see below), whose sum is σ = 55282500. Its totient is φ = 6748416.

The previous prime is 20328547. The next prime is 20328557. The reversal of 20328552 is 25582302.

It is an interprime number because it is at equal distance from previous prime (20328547) and next prime (20328557).

It can be written as a sum of positive squares in 2 ways, for example, as 18096516 + 2232036 = 4254^2 + 1494^2 .

It is not an unprimeable number, because it can be changed into a prime (20328557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24724 + ... + 25532.

Almost surely, 2^20328552 is an apocalyptic number.

It is an amenable number.

20328552 is an abundant number, since it is smaller than the sum of its proper divisors (34953948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20328552 is a wasteful number, since it uses less digits than its factorization.

20328552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 20328552 is about 4508.7195521567. The cubic root of 20328552 is about 272.9200748197.

The spelling of 20328552 in words is "twenty million, three hundred twenty-eight thousand, five hundred fifty-two".