72207020 has 12 divisors (see below), whose sum is σ = 151634784. Its totient is φ = 28882800.

The previous prime is 72206999. The next prime is 72207077. The reversal of 72207020 is 2070227.

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: 3610351 = 72207020 / (7 + 2 + 2 + 0 + 7 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 72206983 and 72207001.

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 3 ways as a sum of consecutive naturals, for example, 1805156 + ... + 1805195.

It is an arithmetic number, because the mean of its divisors is an integer number (12636232).

Almost surely, 2^72207020 is an apocalyptic number.

It is an amenable number.

72207020 is an abundant number, since it is smaller than the sum of its proper divisors (79427764).

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

72207020 is a wasteful number, since it uses less digits than its factorization.

72207020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610360 (or 3610358 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 72207020 is about 8497.4713885956. The cubic root of 72207020 is about 416.4151043277.

Adding to 72207020 its reverse (2070227), we get a palindrome (74277247).

The spelling of 72207020 in words is "seventy-two million, two hundred seven thousand, twenty".