28741633 has 4 divisors (see below), whose sum is σ = 29135428. Its totient is φ = 28347840.

The previous prime is 28741631. The next prime is 28741649. The reversal of 28741633 is 33614782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13593969 + 15147664 = 3687^2 + 3892^2 .

It is a cyclic number.

It is not a de Polignac number, because 28741633 - 2¹ = 28741631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28741631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196788 + ... + 196933.

It is an arithmetic number, because the mean of its divisors is an integer number (7283857).

Almost surely, 2^28741633 is an apocalyptic number.

It is an amenable number.

28741633 is a deficient number, since it is larger than the sum of its proper divisors (393795).

28741633 is an equidigital number, since it uses as much as digits as its factorization.

28741633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393794.

The product of its digits is 24192, while the sum is 34.

The square root of 28741633 is about 5361.1223638339. The cubic root of 28741633 is about 306.3165626246.

The spelling of 28741633 in words is "twenty-eight million, seven hundred forty-one thousand, six hundred thirty-three".