28871264 has 12 divisors (see below), whose sum is σ = 56840364. Its totient is φ = 14435616.

The previous prime is 28871231. The next prime is 28871267. The reversal of 28871264 is 46217882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28871267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451082 + ... + 451145.

It is an arithmetic number, because the mean of its divisors is an integer number (4736697).

Almost surely, 2^28871264 is an apocalyptic number.

It is an amenable number.

28871264 is a deficient number, since it is larger than the sum of its proper divisors (27969100).

28871264 is an equidigital number, since it uses as much as digits as its factorization.

28871264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902237 (or 902229 counting only the distinct ones).

The product of its digits is 43008, while the sum is 38.

The square root of 28871264 is about 5373.1986749049. The cubic root of 28871264 is about 306.7763900586.

The spelling of 28871264 in words is "twenty-eight million, eight hundred seventy-one thousand, two hundred sixty-four".