28831008 has 24 divisors (see below), whose sum is σ = 75681648. Its totient is φ = 9610304.

The previous prime is 28831007. The next prime is 28831073. The reversal of 28831008 is 80013882.

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

It is not an unprimeable number, because it can be changed into a prime (28831007) 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, 150066 + ... + 150257.

It is an arithmetic number, because the mean of its divisors is an integer number (3153402).

Almost surely, 2^28831008 is an apocalyptic number.

It is an amenable number.

28831008 is an abundant number, since it is smaller than the sum of its proper divisors (46850640).

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

28831008 is a wasteful number, since it uses less digits than its factorization.

28831008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300336 (or 300328 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 28831008 is about 5369.4513686223. The cubic root of 28831008 is about 306.6337414767.

The spelling of 28831008 in words is "twenty-eight million, eight hundred thirty-one thousand, eight".