743740 has 24 divisors (see below), whose sum is σ = 1601712. Its totient is φ = 289920.

The previous prime is 743731. The next prime is 743747. The reversal of 743740 is 47347.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743747) 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 7 ways as a sum of consecutive naturals, for example, 367 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (66738).

2⁷⁴³⁷⁴⁰ 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 743740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (800856).

743740 is an abundant number, since it is smaller than the sum of its proper divisors (857972).

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

743740 is a wasteful number, since it uses less digits than its factorization.

743740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 743740 is about 862.4036178032. The cubic root of 743740 is about 90.6025414027.

The spelling of 743740 in words is "seven hundred forty-three thousand, seven hundred forty", and thus it is an iban number.