28776441 has 8 divisors (see below), whose sum is σ = 38405664. Its totient is φ = 19165760.

The previous prime is 28776437. The next prime is 28776443. The reversal of 28776441 is 14467782.

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

It is a cyclic number.

It is not a de Polignac number, because 28776441 - 2² = 28776437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28776441.

It is not an unprimeable number, because it can be changed into a prime (28776443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480 + ... + 7601.

It is an arithmetic number, because the mean of its divisors is an integer number (4800708).

Almost surely, 2^28776441 is an apocalyptic number.

It is an amenable number.

28776441 is a deficient number, since it is larger than the sum of its proper divisors (9629223).

28776441 is a wasteful number, since it uses less digits than its factorization.

28776441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9271.

The product of its digits is 75264, while the sum is 39.

The square root of 28776441 is about 5364.3677167025. The cubic root of 28776441 is about 306.4401692127.

The spelling of 28776441 in words is "twenty-eight million, seven hundred seventy-six thousand, four hundred forty-one".