28446155 has 8 divisors (see below), whose sum is σ = 35058192. Its totient is φ = 22141728.

The previous prime is 28446137. The next prime is 28446161. The reversal of 28446155 is 55164482.

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

It is a cyclic number.

It is not a de Polignac number, because 28446155 - 2⁸ = 28445899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 76697 + ... + 77066.

It is an arithmetic number, because the mean of its divisors is an integer number (4382274).

Almost surely, 2^28446155 is an apocalyptic number.

28446155 is a deficient number, since it is larger than the sum of its proper divisors (6612037).

28446155 is a wasteful number, since it uses less digits than its factorization.

28446155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153805.

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

The square root of 28446155 is about 5333.4936955058. The cubic root of 28446155 is about 305.2632502790.

The spelling of 28446155 in words is "twenty-eight million, four hundred forty-six thousand, one hundred fifty-five".