99288028 has 12 divisors (see below), whose sum is σ = 198576112. Its totient is φ = 42552000.

The previous prime is 99288011. The next prime is 99288029. The reversal of 99288028 is 82088299.

It is a happy number.

99288028 is an admirable number.

It is a super-2 number, since 2×99288028² = 19716225008257568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99288029) 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, 1772973 + ... + 1773028.

Almost surely, 2^99288028 is an apocalyptic number.

It is an amenable number.

99288028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99288028 is a wasteful number, since it uses less digits than its factorization.

99288028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546012 (or 3546010 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 99288028 is about 9964.3378104117. The cubic root of 99288028 is about 463.0546982758.

It can be divided in two parts, 9928 and 8028, that added together give a square (17956 = 134²).

The spelling of 99288028 in words is "ninety-nine million, two hundred eighty-eight thousand, twenty-eight".