28947958 has 16 divisors (see below), whose sum is σ = 47759040. Its totient is φ = 13075776.

The previous prime is 28947943. The next prime is 28947959. The reversal of 28947958 is 85974982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28947959) 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 7 ways as a sum of consecutive naturals, for example, 10623 + ... + 13066.

It is an arithmetic number, because the mean of its divisors is an integer number (2984940).

Almost surely, 2^28947958 is an apocalyptic number.

28947958 is a deficient number, since it is larger than the sum of its proper divisors (18811082).

28947958 is a wasteful number, since it uses less digits than its factorization.

28947958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23751.

The product of its digits is 1451520, while the sum is 52.

The square root of 28947958 is about 5380.3306589837. The cubic root of 28947958 is about 307.0477914754.

The spelling of 28947958 in words is "twenty-eight million, nine hundred forty-seven thousand, nine hundred fifty-eight".