72206250 has 48 divisors (see below), whose sum is σ = 180550944. Its totient is φ = 19250000.

The previous prime is 72206243. The next prime is 72206257. The reversal of 72206250 is 5260227.

It is an interprime number because it is at equal distance from previous prime (72206243) and next prime (72206257).

It is a self number, because there is not a number n which added to its sum of digits gives 72206250.

It is not an unprimeable number, because it can be changed into a prime (72206257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16825 + ... + 20675.

It is an arithmetic number, because the mean of its divisors is an integer number (3761478).

Almost surely, 2^72206250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72206250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90275472).

72206250 is an abundant number, since it is smaller than the sum of its proper divisors (108344694).

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

72206250 is an equidigital number, since it uses as much as digits as its factorization.

72206250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881 (or 3861 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 72206250 is about 8497.4260808788. The cubic root of 72206250 is about 416.4136241356.

Adding to 72206250 its reverse (5260227), we get a palindrome (77466477).

The spelling of 72206250 in words is "seventy-two million, two hundred six thousand, two hundred fifty".