28760308 has 12 divisors (see below), whose sum is σ = 50776740. Its totient is φ = 14252672.

The previous prime is 28760213. The next prime is 28760323. The reversal of 28760308 is 80306782.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4376464 + 24383844 = 2092^2 + 4938^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31363 + ... + 32266.

It is an arithmetic number, because the mean of its divisors is an integer number (4231395).

Almost surely, 2^28760308 is an apocalyptic number.

It is an amenable number.

28760308 is a deficient number, since it is larger than the sum of its proper divisors (22016432).

28760308 is a wasteful number, since it uses less digits than its factorization.

28760308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63746 (or 63744 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28760308 is about 5362.8637871943. The cubic root of 28760308 is about 306.3828917634.

The spelling of 28760308 in words is "twenty-eight million, seven hundred sixty thousand, three hundred eight".