22628481 has 32 divisors (see below), whose sum is σ = 33177600. Its totient is φ = 13675200.

The previous prime is 22628477. The next prime is 22628483. The reversal of 22628481 is 18482622.

It is a happy number.

It is not a de Polignac number, because 22628481 - 2² = 22628477 is a prime.

It is a super-2 number, since 2×22628481² = 1024096304734722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22628483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151795 + ... + 151943.

It is an arithmetic number, because the mean of its divisors is an integer number (1036800).

Almost surely, 2^22628481 is an apocalyptic number.

It is an amenable number.

22628481 is a deficient number, since it is larger than the sum of its proper divisors (10549119).

22628481 is a wasteful number, since it uses less digits than its factorization.

22628481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277.

The product of its digits is 12288, while the sum is 33.

The square root of 22628481 is about 4756.9402981328. The cubic root of 22628481 is about 282.8471457469.

The spelling of 22628481 in words is "twenty-two million, six hundred twenty-eight thousand, four hundred eighty-one".