28049738 has 8 divisors (see below), whose sum is σ = 44289120. Its totient is φ = 13286700.

The previous prime is 28049689. The next prime is 28049759. The reversal of 28049738 is 83794082.

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

It is a junction number, because it is equal to n+sod(n) for n = 28049695 and 28049704.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369038 + ... + 369113.

It is an arithmetic number, because the mean of its divisors is an integer number (5536140).

Almost surely, 2^28049738 is an apocalyptic number.

28049738 is a deficient number, since it is larger than the sum of its proper divisors (16239382).

28049738 is a wasteful number, since it uses less digits than its factorization.

28049738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738172.

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

The square root of 28049738 is about 5296.2003360900. The cubic root of 28049738 is about 303.8385930452.

The spelling of 28049738 in words is "twenty-eight million, forty-nine thousand, seven hundred thirty-eight".