28447154 has 16 divisors (see below), whose sum is σ = 46403928. Its totient is φ = 13024512.

The previous prime is 28447063. The next prime is 28447157. The reversal of 28447154 is 45174482.

It can be written as a sum of positive squares in 4 ways, for example, as 28376929 + 70225 = 5327^2 + 265^2 .

It is not an unprimeable number, because it can be changed into a prime (28447157) 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 7 ways as a sum of consecutive naturals, for example, 10049 + ... + 12564.

Almost surely, 2^28447154 is an apocalyptic number.

28447154 is a deficient number, since it is larger than the sum of its proper divisors (17956774).

28447154 is a wasteful number, since it uses less digits than its factorization.

28447154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22669.

The product of its digits is 35840, while the sum is 35.

The square root of 28447154 is about 5333.5873481176. The cubic root of 28447154 is about 305.2668237487.

The spelling of 28447154 in words is "twenty-eight million, four hundred forty-seven thousand, one hundred fifty-four".