29228445 has 20 divisors (see below), whose sum is σ = 52395420. Its totient is φ = 15588288.

The previous prime is 29228417. The next prime is 29228471. The reversal of 29228445 is 54482292.

It can be written as a sum of positive squares in 2 ways, for example, as 5433561 + 23794884 = 2331^2 + 4878^2 .

It is not a de Polignac number, because 29228445 - 2¹⁰ = 29227421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35680 + ... + 36489.

It is an arithmetic number, because the mean of its divisors is an integer number (2619771).

Almost surely, 2^29228445 is an apocalyptic number.

It is an amenable number.

29228445 is a deficient number, since it is larger than the sum of its proper divisors (23166975).

29228445 is an equidigital number, since it uses as much as digits as its factorization.

29228445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72186 (or 72177 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 29228445 is about 5406.3337854779. Note that the first 3 decimals coincide. The cubic root of 29228445 is about 308.0363038390.

The spelling of 29228445 in words is "twenty-nine million, two hundred twenty-eight thousand, four hundred forty-five".