4020280 has 32 divisors (see below), whose sum is σ = 9869040. Its totient is φ = 1461760.

The previous prime is 4020277. The next prime is 4020281. The reversal of 4020280 is 820204.

4020280 = T₂₅ + T₂₆ + ... + T₂₈₈.

4020280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4129 + ... + 5008.

Almost surely, 2^4020280 is an apocalyptic number.

4020280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4020280 is an abundant number, since it is smaller than the sum of its proper divisors (5848760).

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

4020280 is a wasteful number, since it uses less digits than its factorization.

4020280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9159 (or 9155 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4020280 is about 2005.0635900140. The cubic root of 4020280 is about 159.0079238697.

Adding to 4020280 its reverse (820204), we get a palindrome (4840484).

The spelling of 4020280 in words is "four million, twenty thousand, two hundred eighty".