28529994 has 8 divisors (see below), whose sum is σ = 57060000. Its totient is φ = 9509996.

The previous prime is 28529989. The next prime is 28530017. The reversal of 28529994 is 49992582.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

28529994 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2377494 + ... + 2377505.

It is an arithmetic number, because the mean of its divisors is an integer number (7132500).

Almost surely, 2^28529994 is an apocalyptic number.

28529994 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.

28529994 is a wasteful number, since it uses less digits than its factorization.

28529994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4755004.

The product of its digits is 466560, while the sum is 48.

The square root of 28529994 is about 5341.3475827735. The cubic root of 28529994 is about 305.5628556615.

The spelling of 28529994 in words is "twenty-eight million, five hundred twenty-nine thousand, nine hundred ninety-four".