28314290 has 8 divisors (see below), whose sum is σ = 50965740. Its totient is φ = 11325712.

The previous prime is 28314289. The next prime is 28314323. The reversal of 28314290 is 9241382.

It can be written as a sum of positive squares in 2 ways, for example, as 25877569 + 2436721 = 5087^2 + 1561^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415705 + ... + 1415724.

Almost surely, 2^28314290 is an apocalyptic number.

28314290 is a deficient number, since it is larger than the sum of its proper divisors (22651450).

28314290 is a wasteful number, since it uses less digits than its factorization.

28314290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831436.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 28314290 is about 5321.1173638626. The cubic root of 28314290 is about 304.7908267482.

The spelling of 28314290 in words is "twenty-eight million, three hundred fourteen thousand, two hundred ninety".