20841450 has 96 divisors (see below), whose sum is σ = 61710336. Its totient is φ = 4551360.

The previous prime is 20841421. The next prime is 20841463. The reversal of 20841450 is 5414802.

It is a self number, because there is not a number n which added to its sum of digits gives 20841450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23719 + ... + 24581.

It is an arithmetic number, because the mean of its divisors is an integer number (642816).

Almost surely, 2^20841450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20841450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30855168).

20841450 is an abundant number, since it is smaller than the sum of its proper divisors (40868886).

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

20841450 is a wasteful number, since it uses less digits than its factorization.

20841450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 20841450 is about 4565.2436955764. The cubic root of 20841450 is about 275.1963336253.

The spelling of 20841450 in words is "twenty million, eight hundred forty-one thousand, four hundred fifty".