28000010 has 8 divisors (see below), whose sum is σ = 50400036. Its totient is φ = 11200000.

The previous prime is 27999943. The next prime is 28000019. The reversal of 28000010 is 1000082.

It can be written as a sum of positive squares in 2 ways, for example, as 27994681 + 5329 = 5291^2 + 73^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 27999955 and 28000000.

It is not an unprimeable number, because it can be changed into a prime (28000019) 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, 1399991 + ... + 1400010.

Almost surely, 2^28000010 is an apocalyptic number.

28000010 is a deficient number, since it is larger than the sum of its proper divisors (22400026).

28000010 is a wasteful number, since it uses less digits than its factorization.

28000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800008.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 28000010 is about 5291.5035670403. The cubic root of 28000010 is about 303.6589333374.

Adding to 28000010 its reverse (1000082), we get a palindrome (29000092).

The spelling of 28000010 in words is "twenty-eight million, ten", and thus it is an aban number and an uban number.