28885653 has 24 divisors (see below), whose sum is σ = 44772000. Its totient is φ = 18588528.

The previous prime is 28885651. The next prime is 28885657. The reversal of 28885653 is 35658882.

It is a happy number.

28885653 is a `hidden beast` number, since 2 + 8 + 88 + 565 + 3 = 666.

It is not a de Polignac number, because 28885653 - 2¹ = 28885651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28885599 and 28885608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28885651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4998 + ... + 9096.

It is an arithmetic number, because the mean of its divisors is an integer number (1865500).

Almost surely, 2^28885653 is an apocalyptic number.

It is an amenable number.

28885653 is a deficient number, since it is larger than the sum of its proper divisors (15886347).

28885653 is an equidigital number, since it uses as much as digits as its factorization.

28885653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143 (or 4131 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 28885653 is about 5374.5374684711. The cubic root of 28885653 is about 306.8273458273.

The spelling of 28885653 in words is "twenty-eight million, eight hundred eighty-five thousand, six hundred fifty-three".