147744 has 72 divisors (see below), whose sum is σ = 458640. Its totient is φ = 46656.
The previous prime is 147743. The next prime is 147761. The reversal of 147744 is 447741.
It is a tau number, because it is divible by the number of its divisors (72).
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a nialpdrome in base 6.
It is not an unprimeable number, because it can be changed into a prime (147743) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7767 + ... + 7785.
It is an arithmetic number, because the mean of its divisors is an integer number (6370).
2147744 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 147744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229320).
147744 is an abundant number, since it is smaller than the sum of its proper divisors (310896).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
147744 is an equidigital number, since it uses as much as digits as its factorization.
147744 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 44 (or 24 counting only the distinct ones).
The product of its digits is 3136, while the sum is 27.
The square root of 147744 is about 384.3748170731. The cubic root of 147744 is about 52.8652086895.
It can be divided in two parts, 1477 and 44, that added together give a square (1521 = 392).
The spelling of 147744 in words is "one hundred forty-seven thousand, seven hundred forty-four", and thus it is an iban number.
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