4020072 has 32 divisors (see below), whose sum is σ = 11486400. Its totient is φ = 1148544.

The previous prime is 4020031. The next prime is 4020119. The reversal of 4020072 is 2700204.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11797 + ... + 12132.

It is an arithmetic number, because the mean of its divisors is an integer number (358950).

Almost surely, 2^4020072 is an apocalyptic number.

4020072 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

4020072 is an abundant number, since it is smaller than the sum of its proper divisors (7466328).

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

4020072 is a wasteful number, since it uses less digits than its factorization.

4020072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23945 (or 23941 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 4020072 is about 2005.0117206640. The cubic root of 4020072 is about 159.0051815882.

Adding to 4020072 its reverse (2700204), we get a palindrome (6720276).

The spelling of 4020072 in words is "four million, twenty thousand, seventy-two".