28847824 has 10 divisors (see below), whose sum is σ = 55892690. Its totient is φ = 14423904.

The previous prime is 28847821. The next prime is 28847839. The reversal of 28847824 is 42874882.

It can be written as a sum of positive squares in only one way, i.e., 28815424 + 32400 = 5368^2 + 180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28847821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901479 + ... + 901510.

It is an arithmetic number, because the mean of its divisors is an integer number (5589269).

Almost surely, 2^28847824 is an apocalyptic number.

It is an amenable number.

28847824 is a deficient number, since it is larger than the sum of its proper divisors (27044866).

28847824 is a wasteful number, since it uses less digits than its factorization.

28847824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802997 (or 1802991 counting only the distinct ones).

The product of its digits is 229376, while the sum is 43.

The square root of 28847824 is about 5371.0170359067. The cubic root of 28847824 is about 306.6933457151.

The spelling of 28847824 in words is "twenty-eight million, eight hundred forty-seven thousand, eight hundred twenty-four".