20361444 has 48 divisors (see below), whose sum is σ = 50714496. Its totient is φ = 6336000.

The previous prime is 20361443. The next prime is 20361457. The reversal of 20361444 is 44416302.

It is not an unprimeable number, because it can be changed into a prime (20361443) 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, 30474 + ... + 31134.

It is an arithmetic number, because the mean of its divisors is an integer number (1056552).

Almost surely, 2^20361444 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 20361444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25357248).

20361444 is an abundant number, since it is smaller than the sum of its proper divisors (30353052).

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

20361444 is a wasteful number, since it uses less digits than its factorization.

20361444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 20361444 is about 4512.3656766712. The cubic root of 20361444 is about 273.0671921985.

Adding to 20361444 its reverse (44416302), we get a palindrome (64777746).

The spelling of 20361444 in words is "twenty million, three hundred sixty-one thousand, four hundred forty-four".