4345020 has 72 divisors (see below), whose sum is σ = 13366080. Its totient is φ = 1142400.

The previous prime is 4344997. The next prime is 4345031. The reversal of 4345020 is 205434.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4344984 and 4345002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18061 + ... + 18299.

It is an arithmetic number, because the mean of its divisors is an integer number (185640).

Almost surely, 2^4345020 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 4345020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6683040).

4345020 is an abundant number, since it is smaller than the sum of its proper divisors (9021060).

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

4345020 is a wasteful number, since it uses less digits than its factorization.

4345020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4345020 is about 2084.4711559530. The cubic root of 4345020 is about 163.1788719765.

The spelling of 4345020 in words is "four million, three hundred forty-five thousand, twenty".