4570020 has 240 divisors, whose sum is σ = 18213888. Its totient is φ = 933120.

The previous prime is 4570001. The next prime is 4570037. The reversal of 4570020 is 200754.

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 = 4569975 and 4570002.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 147405 + ... + 147435.

Almost surely, 2^4570020 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 4570020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9106944).

4570020 is an abundant number, since it is smaller than the sum of its proper divisors (13643868).

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

4570020 is a wasteful number, since it uses less digits than its factorization.

4570020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 4570020 is about 2137.7605104408. The cubic root of 4570020 is about 165.9482589021.

Adding to 4570020 its reverse (200754), we get a palindrome (4770774).

The spelling of 4570020 in words is "four million, five hundred seventy thousand, twenty".