20154344 has 64 divisors (see below), whose sum is σ = 45308160. Its totient is φ = 8225280.

The previous prime is 20154313. The next prime is 20154347. The reversal of 20154344 is 44345102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154347) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 147044 + ... + 147180.

It is an arithmetic number, because the mean of its divisors is an integer number (707940).

Almost surely, 2^20154344 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 20154344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22654080).

20154344 is an abundant number, since it is smaller than the sum of its proper divisors (25153816).

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

20154344 is a wasteful number, since it uses less digits than its factorization.

20154344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20154344 is about 4489.3589742857. The cubic root of 20154344 is about 272.1382299129.

Adding to 20154344 its reverse (44345102), we get a palindrome (64499446).

It can be divided in two parts, 201 and 54344, that added together give a palindrome (54545).

The spelling of 20154344 in words is "twenty million, one hundred fifty-four thousand, three hundred forty-four".