4340728 has 16 divisors (see below), whose sum is σ = 9301680. Its totient is φ = 1860288.

The previous prime is 4340719. The next prime is 4340731. The reversal of 4340728 is 8270434.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 4340696 and 4340705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38701 + ... + 38812.

It is an arithmetic number, because the mean of its divisors is an integer number (581355).

Almost surely, 2^4340728 is an apocalyptic number.

It is an amenable number.

4340728 is an abundant number, since it is smaller than the sum of its proper divisors (4960952).

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

4340728 is a wasteful number, since it uses less digits than its factorization.

4340728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77526 (or 77522 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 4340728 is about 2083.4413838647. The cubic root of 4340728 is about 163.1251250470.

The spelling of 4340728 in words is "four million, three hundred forty thousand, seven hundred twenty-eight".