20449422 has 48 divisors (see below), whose sum is σ = 52520832. Its totient is φ = 5841720.

The previous prime is 20449421. The next prime is 20449433. The reversal of 20449422 is 22494402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20449421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 397 + ... + 6407.

It is an arithmetic number, because the mean of its divisors is an integer number (1094184).

Almost surely, 2^20449422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20449422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26260416).

20449422 is an abundant number, since it is smaller than the sum of its proper divisors (32071410).

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

20449422 is an equidigital number, since it uses as much as digits as its factorization.

20449422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6035 (or 6023 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20449422 is about 4522.1037139809. The cubic root of 20449422 is about 273.4599179030.

The spelling of 20449422 in words is "twenty million, four hundred forty-nine thousand, four hundred twenty-two".