28664354 has 8 divisors (see below), whose sum is σ = 44479260. Its totient is φ = 13837936.

The previous prime is 28664353. The next prime is 28664387. The reversal of 28664354 is 45346682.

It can be written as a sum of positive squares in 2 ways, for example, as 24275329 + 4389025 = 4927^2 + 2095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28664351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247049 + ... + 247164.

Almost surely, 2^28664354 is an apocalyptic number.

28664354 is a deficient number, since it is larger than the sum of its proper divisors (15814906).

28664354 is a wasteful number, since it uses less digits than its factorization.

28664354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494244.

The product of its digits is 138240, while the sum is 38.

The square root of 28664354 is about 5353.9101598738. The cubic root of 28664354 is about 306.0417802180.

The spelling of 28664354 in words is "twenty-eight million, six hundred sixty-four thousand, three hundred fifty-four".