28766338 has 8 divisors (see below), whose sum is σ = 44202060. Its totient is φ = 14032320.

The previous prime is 28766327. The next prime is 28766341. The reversal of 28766338 is 83366782.

It can be written as a sum of positive squares in 2 ways, for example, as 21780889 + 6985449 = 4667^2 + 2643^2 .

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 = 28766294 and 28766303.

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, 175323 + ... + 175486.

Almost surely, 2^28766338 is an apocalyptic number.

28766338 is a deficient number, since it is larger than the sum of its proper divisors (15435722).

28766338 is a wasteful number, since it uses less digits than its factorization.

28766338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350852.

The product of its digits is 290304, while the sum is 43.

The square root of 28766338 is about 5363.4259573523. The cubic root of 28766338 is about 306.4043027503.

The spelling of 28766338 in words is "twenty-eight million, seven hundred sixty-six thousand, three hundred thirty-eight".