28267488 has 48 divisors (see below), whose sum is σ = 82449360. Its totient is φ = 9422208.

The previous prime is 28267487. The next prime is 28267493. The reversal of 28267488 is 88476282.

It is a happy number.

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

It is a super-4 number, since 4×28267488⁴ (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28267487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15495 + ... + 17222.

It is an arithmetic number, because the mean of its divisors is an integer number (1717695).

Almost surely, 2^28267488 is an apocalyptic number.

It is an amenable number.

28267488 is an abundant number, since it is smaller than the sum of its proper divisors (54181872).

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

28267488 is a wasteful number, since it uses less digits than its factorization.

28267488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32736 (or 32722 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 28267488 is about 5316.7177844983. The cubic root of 28267488 is about 304.6227998477.

The spelling of 28267488 in words is "twenty-eight million, two hundred sixty-seven thousand, four hundred eighty-eight".