28877386 has 8 divisors (see below), whose sum is σ = 43370820. Its totient is φ = 14420448.

The previous prime is 28877377. The next prime is 28877447. The reversal of 28877386 is 68377882.

It can be written as a sum of positive squares in 2 ways, for example, as 26204161 + 2673225 = 5119^2 + 1635^2 .

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

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, 7051 + ... + 10366.

Almost surely, 2^28877386 is an apocalyptic number.

28877386 is a deficient number, since it is larger than the sum of its proper divisors (14493434).

28877386 is a wasteful number, since it uses less digits than its factorization.

28877386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18248.

The product of its digits is 903168, while the sum is 49.

The square root of 28877386 is about 5373.7683239976. The cubic root of 28877386 is about 306.7980719672.

The spelling of 28877386 in words is "twenty-eight million, eight hundred seventy-seven thousand, three hundred eighty-six".