28764616 has 16 divisors (see below), whose sum is σ = 55249740. Its totient is φ = 14031360.

The previous prime is 28764601. The next prime is 28764647. The reversal of 28764616 is 61646782.

It can be written as a sum of positive squares in 2 ways, for example, as 28579716 + 184900 = 5346^2 + 430^2 .

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, 43521 + ... + 44176.

Almost surely, 2^28764616 is an apocalyptic number.

It is an amenable number.

28764616 is a deficient number, since it is larger than the sum of its proper divisors (26485124).

28764616 is a wasteful number, since it uses less digits than its factorization.

28764616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87744 (or 87740 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 28764616 is about 5363.2654232287. The cubic root of 28764616 is about 306.3981886742.

The spelling of 28764616 in words is "twenty-eight million, seven hundred sixty-four thousand, six hundred sixteen".