20112450 has 48 divisors (see below), whose sum is σ = 52511520. Its totient is φ = 5080320.

The previous prime is 20112439. The next prime is 20112473. The reversal of 20112450 is 5421102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 679 + ... + 6378.

It is an arithmetic number, because the mean of its divisors is an integer number (1093990).

Almost surely, 2^20112450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20112450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26255760).

20112450 is an abundant number, since it is smaller than the sum of its proper divisors (32399070).

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

20112450 is a wasteful number, since it uses less digits than its factorization.

20112450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091 (or 7086 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20112450 is about 4484.6906247812. The cubic root of 20112450 is about 271.9495382888.

Adding to 20112450 its reverse (5421102), we get a palindrome (25533552).

The spelling of 20112450 in words is "twenty million, one hundred twelve thousand, four hundred fifty".