28901738 has 8 divisors (see below), whose sum is σ = 43580160. Its totient is φ = 14375020.

The previous prime is 28901707. The next prime is 28901759. The reversal of 28901738 is 83710982.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37448 + ... + 38211.

It is an arithmetic number, because the mean of its divisors is an integer number (5447520).

Almost surely, 2^28901738 is an apocalyptic number.

28901738 is a deficient number, since it is larger than the sum of its proper divisors (14678422).

28901738 is a wasteful number, since it uses less digits than its factorization.

28901738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75852.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 28901738 is about 5376.0336680493. The cubic root of 28901738 is about 306.8842876138.

The spelling of 28901738 in words is "twenty-eight million, nine hundred one thousand, seven hundred thirty-eight".