72244460 has 48 divisors (see below), whose sum is σ = 163628640. Its totient is φ = 26703360.

The previous prime is 72244457. The next prime is 72244463. The reversal of 72244460 is 6444227.

It is an interprime number because it is at equal distance from previous prime (72244457) and next prime (72244463).

It is not an unprimeable number, because it can be changed into a prime (72244463) 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, 13262 + ... + 17898.

It is an arithmetic number, because the mean of its divisors is an integer number (3408930).

Almost surely, 2^72244460 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 72244460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81814320).

72244460 is an abundant number, since it is smaller than the sum of its proper divisors (91384180).

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

72244460 is a wasteful number, since it uses less digits than its factorization.

72244460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706 (or 4704 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 72244460 is about 8499.6741113998. The cubic root of 72244460 is about 416.4870635714.

Adding to 72244460 its reverse (6444227), we get a palindrome (78688687).

The spelling of 72244460 in words is "seventy-two million, two hundred forty-four thousand, four hundred sixty".