28456154 has 8 divisors (see below), whose sum is σ = 42769620. Its totient is φ = 14199616.

The previous prime is 28456123. The next prime is 28456159. The reversal of 28456154 is 45165482.

It can be written as a sum of positive squares in 2 ways, for example, as 21576025 + 6880129 = 4645^2 + 2623^2 .

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 (28456159) 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, 12959 + ... + 14994.

Almost surely, 2^28456154 is an apocalyptic number.

28456154 is a deficient number, since it is larger than the sum of its proper divisors (14313466).

28456154 is a wasteful number, since it uses less digits than its factorization.

28456154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28464.

The product of its digits is 38400, while the sum is 35.

The square root of 28456154 is about 5334.4309912117. The cubic root of 28456154 is about 305.2990133979.

The spelling of 28456154 in words is "twenty-eight million, four hundred fifty-six thousand, one hundred fifty-four".