28645716 has 96 divisors (see below), whose sum is σ = 76769280. Its totient is φ = 8236800.

The previous prime is 28645699. The next prime is 28645717. The reversal of 28645716 is 61754682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28645717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362565 + ... + 362643.

It is an arithmetic number, because the mean of its divisors is an integer number (799680).

Almost surely, 2^28645716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28645716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38384640).

28645716 is an abundant number, since it is smaller than the sum of its proper divisors (48123564).

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

28645716 is a wasteful number, since it uses less digits than its factorization.

28645716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 203 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 28645716 is about 5352.1692798341. The cubic root of 28645716 is about 305.9754348258.

The spelling of 28645716 in words is "twenty-eight million, six hundred forty-five thousand, seven hundred sixteen".