72200440 has 64 divisors (see below), whose sum is σ = 179071200. Its totient is φ = 26030592.

The previous prime is 72200419. The next prime is 72200441. The reversal of 72200440 is 4400227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72200441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20746 + ... + 23974.

Almost surely, 2^72200440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72200440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89535600).

72200440 is an abundant number, since it is smaller than the sum of its proper divisors (106870760).

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

72200440 is a wasteful number, since it uses less digits than its factorization.

72200440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296 (or 3292 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 72200440 is about 8497.0842057732. The cubic root of 72200440 is about 416.4024550746.

Adding to 72200440 its reverse (4400227), we get a palindrome (76600667).

The spelling of 72200440 in words is "seventy-two million, two hundred thousand, four hundred forty".