9072020 has 12 divisors (see below), whose sum is σ = 19051284. Its totient is φ = 3628800.

The previous prime is 9071989. The next prime is 9072031. The reversal of 9072020 is 202709.

It can be written as a sum of positive squares in 2 ways, for example, as 4999696 + 4072324 = 2236^2 + 2018^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 453601 = 9072020 / (9 + 0 + 7 + 2 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 9071983 and 9072001.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 226781 + ... + 226820.

It is an arithmetic number, because the mean of its divisors is an integer number (1587607).

Almost surely, 2^9072020 is an apocalyptic number.

It is an amenable number.

9072020 is an abundant number, since it is smaller than the sum of its proper divisors (9979264).

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

9072020 is a wasteful number, since it uses less digits than its factorization.

9072020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453610 (or 453608 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 9072020 is about 3011.9794156003. The cubic root of 9072020 is about 208.5617519570.

Adding to 9072020 its reverse (202709), we get a palindrome (9274729).

It can be divided in two parts, 90 and 72020, that multiplied together give a triangular number (6481800 = T₃₆₀₀).

The spelling of 9072020 in words is "nine million, seventy-two thousand, twenty".