28499748 has 12 divisors (see below), whose sum is σ = 66499440. Its totient is φ = 9499912.

The previous prime is 28499747. The next prime is 28499759. The reversal of 28499748 is 84799482.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 28499748.

It is not an unprimeable number, because it can be changed into a prime (28499741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187478 + ... + 1187501.

It is an arithmetic number, because the mean of its divisors is an integer number (5541620).

Almost surely, 2^28499748 is an apocalyptic number.

It is an amenable number.

28499748 is an abundant number, since it is smaller than the sum of its proper divisors (37999692).

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

28499748 is a wasteful number, since it uses less digits than its factorization.

28499748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374986 (or 2374984 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 28499748 is about 5338.5155240010. The cubic root of 28499748 is about 305.4548369212.

The spelling of 28499748 in words is "twenty-eight million, four hundred ninety-nine thousand, seven hundred forty-eight".