4340028 has 108 divisors (see below), whose sum is σ = 13160616. Its totient is φ = 1108800.

The previous prime is 4340009. The next prime is 4340057. The reversal of 4340028 is 8200434.

It is a happy number.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 4339986 and 4340013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 71118 + ... + 71178.

Almost surely, 2^4340028 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 4340028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6580308).

4340028 is an abundant number, since it is smaller than the sum of its proper divisors (8820588).

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

4340028 is a wasteful number, since it uses less digits than its factorization.

4340028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4340028 is about 2083.2733858042. The cubic root of 4340028 is about 163.1163558785.

The spelling of 4340028 in words is "four million, three hundred forty thousand, twenty-eight".