28971446 has 24 divisors (see below), whose sum is σ = 51070176. Its totient is φ = 12289200.

The previous prime is 28971413. The next prime is 28971463. The reversal of 28971446 is 64417982.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 8435 + ... + 11361.

It is an arithmetic number, because the mean of its divisors is an integer number (2127924).

Almost surely, 2^28971446 is an apocalyptic number.

28971446 is a deficient number, since it is larger than the sum of its proper divisors (22098730).

28971446 is a wasteful number, since it uses less digits than its factorization.

28971446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3044 (or 3037 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 28971446 is about 5382.5129818701. The cubic root of 28971446 is about 307.1308138985.

The spelling of 28971446 in words is "twenty-eight million, nine hundred seventy-one thousand, four hundred forty-six".