4020730 has 32 divisors (see below), whose sum is σ = 8398080. Its totient is φ = 1357440.

The previous prime is 4020727. The next prime is 4020733. The reversal of 4020730 is 370204.

It is an interprime number because it is at equal distance from previous prime (4020727) and next prime (4020733).

It is not an unprimeable number, because it can be changed into a prime (4020733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4566 + ... + 5374.

It is an arithmetic number, because the mean of its divisors is an integer number (262440).

Almost surely, 2^4020730 is an apocalyptic number.

4020730 is an abundant number, since it is smaller than the sum of its proper divisors (4377350).

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

4020730 is a wasteful number, since it uses less digits than its factorization.

4020730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 4020730 is about 2005.1758027664. The cubic root of 4020730 is about 159.0138563666.

Adding to 4020730 its reverse (370204), we get a palindrome (4390934).

The spelling of 4020730 in words is "four million, twenty thousand, seven hundred thirty".