45322272 has 72 divisors (see below), whose sum is σ = 136481436. Its totient is φ = 14217216.

The previous prime is 45322267. The next prime is 45322283. The reversal of 45322272 is 27222354.

It can be written as a sum of positive squares in 2 ways, for example, as 44675856 + 646416 = 6684^2 + 804^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268 + ... + 9524.

Almost surely, 2^45322272 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 45322272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68240718).

45322272 is an abundant number, since it is smaller than the sum of its proper divisors (91159164).

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

45322272 is a wasteful number, since it uses less digits than its factorization.

45322272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9290 (or 9279 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 45322272 is about 6732.1818157266. The cubic root of 45322272 is about 356.5364130697.

The spelling of 45322272 in words is "forty-five million, three hundred twenty-two thousand, two hundred seventy-two".