28760216 has 8 divisors (see below), whose sum is σ = 53925420. Its totient is φ = 14380104.

The previous prime is 28760213. The next prime is 28760323. The reversal of 28760216 is 61206782.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28760213) by changing a digit.

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 as a sum of consecutive naturals, namely, 1797506 + ... + 1797521.

Almost surely, 2^28760216 is an apocalyptic number.

It is an amenable number.

28760216 is a deficient number, since it is larger than the sum of its proper divisors (25165204).

28760216 is a wasteful number, since it uses less digits than its factorization.

28760216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595033 (or 3595029 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28760216 is about 5362.8552096808. The cubic root of 28760216 is about 306.3825650717.

Adding to 28760216 its reverse (61206782), we get a palindrome (89966998).

The spelling of 28760216 in words is "twenty-eight million, seven hundred sixty thousand, two hundred sixteen".