20488896 has 112 divisors (see below), whose sum is σ = 61447680. Its totient is φ = 6693120.

The previous prime is 20488891. The next prime is 20488901. The reversal of 20488896 is 69888402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20488891) and next prime (20488901).

It is not an unprimeable number, because it can be changed into a prime (20488891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122605 + ... + 122771.

It is an arithmetic number, because the mean of its divisors is an integer number (548640).

Almost surely, 2^20488896 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 20488896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30723840).

20488896 is an abundant number, since it is smaller than the sum of its proper divisors (40958784).

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

20488896 is a wasteful number, since it uses less digits than its factorization.

20488896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 20488896 is about 4526.4661713085. The cubic root of 20488896 is about 273.6357601766.

The spelling of 20488896 in words is "twenty million, four hundred eighty-eight thousand, eight hundred ninety-six".