22728381453 has 6 divisors (see below), whose sum is σ = 32829884334. Its totient is φ = 15152254296.

The previous prime is 22728381409. The next prime is 22728381461. The reversal of 22728381453 is 35418382722.

22728381453 is a `hidden beast` number, since 227 + 2 + 8 + 381 + 45 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20931723684 + 1796657769 = 144678^2 + 42387^2 .

It is not a de Polignac number, because 22728381453 - 2¹⁷ = 22728250381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22728381399 and 22728381408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22728381463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1262687850 + ... + 1262687867.

It is an arithmetic number, because the mean of its divisors is an integer number (5471647389).

Almost surely, 2^22728381453 is an apocalyptic number.

It is an amenable number.

22728381453 is a deficient number, since it is larger than the sum of its proper divisors (10101502881).

22728381453 is a wasteful number, since it uses less digits than its factorization.

22728381453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525375723 (or 2525375720 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 22728381453 in words is "twenty-two billion, seven hundred twenty-eight million, three hundred eighty-one thousand, four hundred fifty-three".