28390010 has 32 divisors (see below), whose sum is σ = 56674944.
Its totient is φ = 10152000.
The previous prime is 28390003. The next prime is 28390091. The reversal of 28390010 is 1009382.
Adding to 28390010 its reverse (1009382), we get a palindrome (29399392).
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 15 ways as a sum of consecutive naturals, for example, 4595 + ... + 8825.
It is an arithmetic number, because the mean of its divisors is an integer number (1771092).
Almost surely, 228390010 is an apocalyptic number.
28390010 is a deficient number, since it is larger than the sum of its proper divisors (28284934).
28390010 is a wasteful number, since it uses less digits than its factorization.
28390010 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4310.
The product of its (nonzero) digits is 432, while the sum is 23.
The square root of 28390010 is about 5328.2276603013.
The cubic root of 28390010 is about 305.0622823628.
The spelling of 28390010 in words is "twenty-eight million, three hundred ninety thousand, ten".