20000544 has 48 divisors (see below), whose sum is σ = 52875648. Its totient is φ = 6619392.

The previous prime is 20000543. The next prime is 20000567. The reversal of 20000544 is 44500002.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (20000543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14409 + ... + 15735.

It is an arithmetic number, because the mean of its divisors is an integer number (1101576).

Almost surely, 2^20000544 is an apocalyptic number.

20000544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26437824).

20000544 is an abundant number, since it is smaller than the sum of its proper divisors (32875104).

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

20000544 is a wasteful number, since it uses less digits than its factorization.

20000544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 20000544 is about 4472.1967756350. The cubic root of 20000544 is about 271.4442227091. Note that the first 3 decimals are identical.

Adding to 20000544 its reverse (44500002), we get a palindrome (64500546).

The spelling of 20000544 in words is "twenty million, five hundred forty-four", and thus it is an aban number.