20488328 has 32 divisors (see below), whose sum is σ = 44530560. Its totient is φ = 8655360.

The previous prime is 20488313. The next prime is 20488333. The reversal of 20488328 is 82388402.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400 + ... + 6552.

It is an arithmetic number, because the mean of its divisors is an integer number (1391580).

Almost surely, 2^20488328 is an apocalyptic number.

20488328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20488328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22265280).

20488328 is an abundant number, since it is smaller than the sum of its proper divisors (24042232).

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

20488328 is a wasteful number, since it uses less digits than its factorization.

20488328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5237 (or 5233 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 20488328 is about 4526.4034287721. The cubic root of 20488328 is about 273.6332315460.

The spelling of 20488328 in words is "twenty million, four hundred eighty-eight thousand, three hundred twenty-eight".