28974633 has 4 divisors (see below), whose sum is σ = 38632848. Its totient is φ = 19316420.

The previous prime is 28974629. The next prime is 28974653. The reversal of 28974633 is 33647982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28974633 - 2² = 28974629 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28974653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4829103 + ... + 4829108.

It is an arithmetic number, because the mean of its divisors is an integer number (9658212).

Almost surely, 2^28974633 is an apocalyptic number.

It is an amenable number.

28974633 is a deficient number, since it is larger than the sum of its proper divisors (9658215).

28974633 is an equidigital number, since it uses as much as digits as its factorization.

28974633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9658214.

The product of its digits is 217728, while the sum is 42.

The square root of 28974633 is about 5382.8090250352. The cubic root of 28974633 is about 307.1420754468.

The spelling of 28974633 in words is "twenty-eight million, nine hundred seventy-four thousand, six hundred thirty-three".