20492288 has 26 divisors (see below), whose sum is σ = 40987764. Its totient is φ = 10244096.

The previous prime is 20492273. The next prime is 20492321. The reversal of 20492288 is 88229402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1595 + ... + 6597.

Almost surely, 2^20492288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20492288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20493882).

20492288 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20492288 is an frugal number, since it uses more digits than its factorization.

20492288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027 (or 5005 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 20492288 is about 4526.8408410281. The cubic root of 20492288 is about 273.6508597584.

The spelling of 20492288 in words is "twenty million, four hundred ninety-two thousand, two hundred eighty-eight".