28867488 has 48 divisors (see below), whose sum is σ = 81609696. Its totient is φ = 8881920.

The previous prime is 28867477. The next prime is 28867493. The reversal of 28867488 is 88476882.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 28867488.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10318 + ... + 12813.

It is an arithmetic number, because the mean of its divisors is an integer number (1700202).

Almost surely, 2^28867488 is an apocalyptic number.

It is an amenable number.

28867488 is an abundant number, since it is smaller than the sum of its proper divisors (52742208).

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

28867488 is a wasteful number, since it uses less digits than its factorization.

28867488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23157 (or 23149 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 51.

The square root of 28867488 is about 5372.8472898455. The cubic root of 28867488 is about 306.7630153046.

It can be divided in two parts, 288 and 67488, that added together give a palindrome (67776).

The spelling of 28867488 in words is "twenty-eight million, eight hundred sixty-seven thousand, four hundred eighty-eight".