4020630 has 32 divisors (see below), whose sum is σ = 10070784. Its totient is φ = 1025376.

The previous prime is 4020623. The next prime is 4020631. The reversal of 4020630 is 360204.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2224 + ... + 3603.

It is an arithmetic number, because the mean of its divisors is an integer number (314712).

Almost surely, 2^4020630 is an apocalyptic number.

4020630 is an abundant number, since it is smaller than the sum of its proper divisors (6050154).

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

4020630 is a wasteful number, since it uses less digits than its factorization.

4020630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 4020630 is about 2005.1508671419. The cubic root of 4020630 is about 159.0125380722.

Adding to 4020630 its reverse (360204), we get a palindrome (4380834).

The spelling of 4020630 in words is "four million, twenty thousand, six hundred thirty".