28354618 has 4 divisors (see below), whose sum is σ = 42531930. Its totient is φ = 14177308.

The previous prime is 28354603. The next prime is 28354621. The reversal of 28354618 is 81645382.

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 only one way, i.e., 16265089 + 12089529 = 4033^2 + 3477^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7088653 + ... + 7088656.

Almost surely, 2^28354618 is an apocalyptic number.

28354618 is a deficient number, since it is larger than the sum of its proper divisors (14177312).

28354618 is a wasteful number, since it uses less digits than its factorization.

28354618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14177311.

The product of its digits is 46080, while the sum is 37.

The square root of 28354618 is about 5324.9054451699. The cubic root of 28354618 is about 304.9354624714.

The spelling of 28354618 in words is "twenty-eight million, three hundred fifty-four thousand, six hundred eighteen".