28129358 has 8 divisors (see below), whose sum is σ = 42239352. Its totient is φ = 14049576.

The previous prime is 28129301. The next prime is 28129393. The reversal of 28129358 is 85392182.

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

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 3 ways as a sum of consecutive naturals, for example, 5060 + ... + 9047.

It is an arithmetic number, because the mean of its divisors is an integer number (5279919).

Almost surely, 2^28129358 is an apocalyptic number.

28129358 is a deficient number, since it is larger than the sum of its proper divisors (14109994).

28129358 is a wasteful number, since it uses less digits than its factorization.

28129358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15106.

The product of its digits is 34560, while the sum is 38.

The square root of 28129358 is about 5303.7117191642. The cubic root of 28129358 is about 304.1258063667.

The spelling of 28129358 in words is "twenty-eight million, one hundred twenty-nine thousand, three hundred fifty-eight".