28299552 has 24 divisors (see below), whose sum is σ = 74286576. Its totient is φ = 9433152.

The previous prime is 28299539. The next prime is 28299599. The reversal of 28299552 is 25599282.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147298 + ... + 147489.

It is an arithmetic number, because the mean of its divisors is an integer number (3095274).

Almost surely, 2^28299552 is an apocalyptic number.

It is an amenable number.

28299552 is an abundant number, since it is smaller than the sum of its proper divisors (45987024).

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

28299552 is a wasteful number, since it uses less digits than its factorization.

28299552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294800 (or 294792 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 28299552 is about 5319.7323240930. The cubic root of 28299552 is about 304.7379348831.

The spelling of 28299552 in words is "twenty-eight million, two hundred ninety-nine thousand, five hundred fifty-two".