20448450 has 192 divisors, whose sum is σ = 65888640. Its totient is φ = 4665600.

The previous prime is 20448443. The next prime is 20448469. The reversal of 20448450 is 5484402.

20448450 is a `hidden beast` number, since 204 + 4 + 8 + 450 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1202842 + ... + 1202858.

It is an arithmetic number, because the mean of its divisors is an integer number (343170).

Almost surely, 2^20448450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20448450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32944320).

20448450 is an abundant number, since it is smaller than the sum of its proper divisors (45440190).

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

20448450 is a wasteful number, since it uses less digits than its factorization.

20448450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 20448450 is about 4521.9962405999. The cubic root of 20448450 is about 273.4555851440.

The spelling of 20448450 in words is "twenty million, four hundred forty-eight thousand, four hundred fifty".