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44400000 = 2735537
BaseRepresentation
bin1010100101011…
…1110110000000
310002112202100110
42221113312000
542331300000
64223351320
71046252031
oct251276600
9102482313
1044400000
1123076417
1212a52540
1392774b8
145c7aa88
153d70850
hex2a57d80

44400000 has 192 divisors, whose sum is σ = 151396560. Its totient is φ = 11520000.

The previous prime is 44399981. The next prime is 44400001. The reversal of 44400000 is 444.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44400001) 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, 1199982 + ... + 1200018.

Almost surely, 244400000 is an apocalyptic number.

44400000 is a gapful number since it is divisible by the number (40) 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 44400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75698280).

44400000 is an abundant number, since it is smaller than the sum of its proper divisors (106996560).

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

44400000 is an frugal number, since it uses more digits than its factorization.

44400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 44400000 is about 6663.3324995831. The cubic root of 44400000 is about 354.1014105069.

Adding to 44400000 its reverse (444), we get a palindrome (44400444).

44400000 divided by its reverse (444) gives a 5-th power (100000 = 105).

The spelling of 44400000 in words is "forty-four million, four hundred thousand".