28777246 has 4 divisors (see below), whose sum is σ = 43165872. Its totient is φ = 14388622.

The previous prime is 28777241. The next prime is 28777247. The reversal of 28777246 is 64277782.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28777241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7194310 + ... + 7194313.

It is an arithmetic number, because the mean of its divisors is an integer number (10791468).

Almost surely, 2^28777246 is an apocalyptic number.

28777246 is a deficient number, since it is larger than the sum of its proper divisors (14388626).

28777246 is a wasteful number, since it uses less digits than its factorization.

28777246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14388625.

The product of its digits is 263424, while the sum is 43.

The square root of 28777246 is about 5364.4427483197. The cubic root of 28777246 is about 306.4430266663.

The spelling of 28777246 in words is "twenty-eight million, seven hundred seventy-seven thousand, two hundred forty-six".