22451148 has 48 divisors (see below), whose sum is σ = 59458560. Its totient is φ = 7322832.

The previous prime is 22451147. The next prime is 22451167. The reversal of 22451148 is 84115422.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22451147) 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, 2865 + ... + 7287.

It is an arithmetic number, because the mean of its divisors is an integer number (1238720).

Almost surely, 2^22451148 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 22451148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29729280).

22451148 is an abundant number, since it is smaller than the sum of its proper divisors (37007412).

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

22451148 is a wasteful number, since it uses less digits than its factorization.

22451148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483 (or 4475 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 22451148 is about 4738.2642391492. The cubic root of 22451148 is about 282.1063428715.

The spelling of 22451148 in words is "twenty-two million, four hundred fifty-one thousand, one hundred forty-eight".