28472333 has 4 divisors (see below), whose sum is σ = 28483008. Its totient is φ = 28461660.

The previous prime is 28472329. The next prime is 28472357. The reversal of 28472333 is 33327482.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28472333 - 2² = 28472329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28472333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28472303) 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, 2510 + ... + 7952.

It is an arithmetic number, because the mean of its divisors is an integer number (7120752).

Almost surely, 2^28472333 is an apocalyptic number.

It is an amenable number.

28472333 is a deficient number, since it is larger than the sum of its proper divisors (10675).

28472333 is an equidigital number, since it uses as much as digits as its factorization.

28472333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10674.

The product of its digits is 24192, while the sum is 32.

The square root of 28472333 is about 5335.9472448667. The cubic root of 28472333 is about 305.3568625942.

The spelling of 28472333 in words is "twenty-eight million, four hundred seventy-two thousand, three hundred thirty-three".