747738 has 32 divisors (see below), whose sum is σ = 1696320. Its totient is φ = 244080.

The previous prime is 747737. The next prime is 747743. The reversal of 747738 is 837747.

It is a happy number.

It is a super-2 number, since 2×747738² = 1118224233288, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 747738.

It is not an unprimeable number, because it can be changed into a prime (747731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3181 + ... + 3407.

It is an arithmetic number, because the mean of its divisors is an integer number (53010).

2⁷⁴⁷⁷³⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848160).

747738 is an abundant number, since it is smaller than the sum of its proper divisors (948582).

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

747738 is a wasteful number, since it uses less digits than its factorization.

747738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 293 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 747738 is about 864.7184512892. The cubic root of 747738 is about 90.7645970646.

Subtracting 747738 from its reverse (837747), we obtain a palindrome (90009).

It can be divided in two parts, 747 and 738, that added together give a triangular number (1485 = T₅₄).

The spelling of 747738 in words is "seven hundred forty-seven thousand, seven hundred thirty-eight".