28736770 has 8 divisors (see below), whose sum is σ = 51726204. Its totient is φ = 11494704.

The previous prime is 28736731. The next prime is 28736789. The reversal of 28736770 is 7763782.

It can be written as a sum of positive squares in 2 ways, for example, as 27594009 + 1142761 = 5253^2 + 1069^2 .

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1436829 + ... + 1436848.

Almost surely, 2^28736770 is an apocalyptic number.

28736770 is a deficient number, since it is larger than the sum of its proper divisors (22989434).

28736770 is a wasteful number, since it uses less digits than its factorization.

28736770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873684.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 28736770 is about 5360.6688015583. The cubic root of 28736770 is about 306.2992856955.

The spelling of 28736770 in words is "twenty-eight million, seven hundred thirty-six thousand, seven hundred seventy".