72008220 has 48 divisors (see below), whose sum is σ = 202245120. Its totient is φ = 19142976.

The previous prime is 72008203. The next prime is 72008221. The reversal of 72008220 is 2280027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72008221) 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, 19869 + ... + 23211.

It is an arithmetic number, because the mean of its divisors is an integer number (4213440).

Almost surely, 2^72008220 is an apocalyptic number.

It is an amenable number.

72008220 is an abundant number, since it is smaller than the sum of its proper divisors (130236900).

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

72008220 is a wasteful number, since it uses less digits than its factorization.

72008220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714 (or 3712 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 72008220 is about 8485.7657285598. The cubic root of 72008220 is about 416.0325957570.

Adding to 72008220 its reverse (2280027), we get a palindrome (74288247).

The spelling of 72008220 in words is "seventy-two million, eight thousand, two hundred twenty".