4345440 has 96 divisors (see below), whose sum is σ = 14950656. Its totient is φ = 1052160.

The previous prime is 4345427. The next prime is 4345463. The reversal of 4345440 is 445434.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 4⁴ + 3⁹ + 4⁸ + 5³ + 4⁸ + 4¹¹ + 0 .

It is a self number, because there is not a number n which added to its sum of digits gives 4345440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4869 + ... + 5691.

It is an arithmetic number, because the mean of its divisors is an integer number (155736).

Almost surely, 2^4345440 is an apocalyptic number.

4345440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4345440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7475328).

4345440 is an abundant number, since it is smaller than the sum of its proper divisors (10605216).

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

4345440 is a wasteful number, since it uses less digits than its factorization.

4345440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 4345440 is about 2084.5718984962. The cubic root of 4345440 is about 163.1841295601.

The spelling of 4345440 in words is "four million, three hundred forty-five thousand, four hundred forty".