72207330 has 64 divisors (see below), whose sum is σ = 197624448. Its totient is φ = 16727040.

The previous prime is 72207329. The next prime is 72207367. The reversal of 72207330 is 3370227.

It is a self number, because there is not a number n which added to its sum of digits gives 72207330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1185 + ... + 12075.

It is an arithmetic number, because the mean of its divisors is an integer number (3087882).

Almost surely, 2^72207330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72207330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98812224).

72207330 is an abundant number, since it is smaller than the sum of its proper divisors (125417118).

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

72207330 is a wasteful number, since it uses less digits than its factorization.

72207330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10931.

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 72207330 is about 8497.4896292964. The cubic root of 72207330 is about 416.4157002462.

Adding to 72207330 its reverse (3370227), we get a palindrome (75577557).

The spelling of 72207330 in words is "seventy-two million, two hundred seven thousand, three hundred thirty".