734420 has 12 divisors (see below), whose sum is σ = 1542324. Its totient is φ = 293760.

The previous prime is 734411. The next prime is 734423. The reversal of 734420 is 24437.

It is a happy number.

734420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 75076 + 659344 = 274^2 + 812^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 36721 = 734420 / (7 + 3 + 4 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 734392 and 734401.

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 734420.

It is not an unprimeable number, because it can be changed into a prime (734423) by changing a digit.

734420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18341 + ... + 18380.

It is an arithmetic number, because the mean of its divisors is an integer number (128527).

2⁷³⁴⁴²⁰ is an apocalyptic number.

It is an amenable number.

734420 is an abundant number, since it is smaller than the sum of its proper divisors (807904).

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

734420 is a wasteful number, since it uses less digits than its factorization.

734420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36730 (or 36728 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 734420 is about 856.9830803464. The cubic root of 734420 is about 90.2224947706. Note that the first 3 decimals are identical.

Adding to 734420 its reverse (24437), we get a palindrome (758857).

The spelling of 734420 in words is "seven hundred thirty-four thousand, four hundred twenty".