100744 has 24 divisors (see below), whose sum is σ = 220590. Its totient is φ = 43008.

The previous prime is 100741. The next prime is 100747. The reversal of 100744 is 447001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100741) and next prime (100747).

It can be written as a sum of positive squares in only one way, i.e., 56644 + 44100 = 238^2 + 210^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 264 + ... + 520.

2¹⁰⁰⁷⁴⁴ is an apocalyptic number.

100744 is a gapful number since it is divisible by the number (14) 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 100744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110295).

100744 is an abundant number, since it is smaller than the sum of its proper divisors (119846).

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

100744 is a wasteful number, since it uses less digits than its factorization.

100744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 100744 is about 317.4019533651. The cubic root of 100744 is about 46.5307154371.

Adding to 100744 its reverse (447001), we get a palindrome (547745).

The spelling of 100744 in words is "one hundred thousand, seven hundred forty-four", and thus it is an iban number.