28671946 has 8 divisors (see below), whose sum is σ = 43212384. Its totient is φ = 14267820.

The previous prime is 28671941. The next prime is 28671949. The reversal of 28671946 is 64917682.

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 (28671941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33550 + ... + 34393.

It is an arithmetic number, because the mean of its divisors is an integer number (5401548).

Almost surely, 2^28671946 is an apocalyptic number.

28671946 is a deficient number, since it is larger than the sum of its proper divisors (14540438).

28671946 is a wasteful number, since it uses less digits than its factorization.

28671946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68156.

The product of its digits is 145152, while the sum is 43.

The square root of 28671946 is about 5354.6191274450. The cubic root of 28671946 is about 306.0687970964.

The spelling of 28671946 in words is "twenty-eight million, six hundred seventy-one thousand, nine hundred forty-six".