22481928 has 64 divisors (see below), whose sum is σ = 71376000. Its totient is φ = 6422976.

The previous prime is 22481923. The next prime is 22481947. The reversal of 22481928 is 82918422.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22481892 and 22481901.

It is not an unprimeable number, because it can be changed into a prime (22481923) 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, 5923 + ... + 8946.

It is an arithmetic number, because the mean of its divisors is an integer number (1115250).

Almost surely, 2^22481928 is an apocalyptic number.

22481928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22481928 is an abundant number, since it is smaller than the sum of its proper divisors (48894072).

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

22481928 is a wasteful number, since it uses less digits than its factorization.

22481928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14891 (or 14881 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 22481928 is about 4741.5111515212. The cubic root of 22481928 is about 282.2352044051.

It can be divided in two parts, 22481 and 928, that added together give a square (23409 = 153²).

The spelling of 22481928 in words is "twenty-two million, four hundred eighty-one thousand, nine hundred twenty-eight".