28816650 has 36 divisors (see below), whose sum is σ = 77421942. Its totient is φ = 7684320.

The previous prime is 28816643. The next prime is 28816661. The reversal of 28816650 is 5661882.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12341169 + 16475481 = 3513^2 + 4059^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31569 + ... + 32468.

Almost surely, 2^28816650 is an apocalyptic number.

28816650 is an abundant number, since it is smaller than the sum of its proper divisors (48605292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28816650 is a wasteful number, since it uses less digits than its factorization.

28816650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64055 (or 64047 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28816650 is about 5368.1141940164. The cubic root of 28816650 is about 306.5828312633.

The spelling of 28816650 in words is "twenty-eight million, eight hundred sixteen thousand, six hundred fifty".