28323008 has 56 divisors (see below), whose sum is σ = 64763904. Its totient is φ = 12038400.

The previous prime is 28322981. The next prime is 28323011. The reversal of 28323008 is 80032382.

28323008 = T₂₃₇ + T₂₃₈ + ... + T₅₆₇.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85403 + ... + 85733.

Almost surely, 2^28323008 is an apocalyptic number.

28323008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28323008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32381952).

28323008 is an abundant number, since it is smaller than the sum of its proper divisors (36440896).

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

28323008 is a wasteful number, since it uses less digits than its factorization.

28323008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 28323008 is about 5321.9364896624. The cubic root of 28323008 is about 304.8221053447.

The spelling of 28323008 in words is "twenty-eight million, three hundred twenty-three thousand, eight".