747144 has 40 divisors (see below), whose sum is σ = 2094510. Its totient is φ = 248832.

The previous prime is 747139. The next prime is 747157. The reversal of 747144 is 441747.

It can be written as a sum of positive squares in only one way, i.e., 544644 + 202500 = 738^2 + 450^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 747144.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 72 + ... + 1224.

2⁷⁴⁷¹⁴⁴ 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 747144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1047255).

747144 is an abundant number, since it is smaller than the sum of its proper divisors (1347366).

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

747144 is a wasteful number, since it uses less digits than its factorization.

747144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 1158 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 747144 is about 864.3749186551. The cubic root of 747144 is about 90.7405563563.

747144 divided by its sum of digits (27) gives a palindrome (27672).

The spelling of 747144 in words is "seven hundred forty-seven thousand, one hundred forty-four", and thus it is an iban number.