28291006 has 8 divisors (see below), whose sum is σ = 42973920. Its totient is φ = 13966368.

The previous prime is 28290991. The next prime is 28291013. The reversal of 28291006 is 60019282.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89371 + ... + 89686.

It is an arithmetic number, because the mean of its divisors is an integer number (5371740).

Almost surely, 2^28291006 is an apocalyptic number.

28291006 is a deficient number, since it is larger than the sum of its proper divisors (14682914).

28291006 is a wasteful number, since it uses less digits than its factorization.

28291006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179138.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 28291006 is about 5318.9290275393. The cubic root of 28291006 is about 304.7072565107.

The spelling of 28291006 in words is "twenty-eight million, two hundred ninety-one thousand, six".