28800386 has 8 divisors (see below), whose sum is σ = 43239420. Its totient is φ = 14387248.

The previous prime is 28800377. The next prime is 28800403. The reversal of 28800386 is 68300882.

It can be written as a sum of positive squares in 2 ways, for example, as 28783225 + 17161 = 5365^2 + 131^2 .

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3401 + ... + 8316.

Almost surely, 2^28800386 is an apocalyptic number.

28800386 is a deficient number, since it is larger than the sum of its proper divisors (14439034).

28800386 is a wasteful number, since it uses less digits than its factorization.

28800386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12948.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 28800386 is about 5366.5991093056. The cubic root of 28800386 is about 306.5251423746.

The spelling of 28800386 in words is "twenty-eight million, eight hundred thousand, three hundred eighty-six".