28246251 has 8 divisors (see below), whose sum is σ = 41085504. Its totient is φ = 17118920.

The previous prime is 28246247. The next prime is 28246289. The reversal of 28246251 is 15264282.

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

It is a cyclic number.

It is not a de Polignac number, because 28246251 - 2² = 28246247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28246951) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 427941 + ... + 428006.

It is an arithmetic number, because the mean of its divisors is an integer number (5135688).

Almost surely, 2^28246251 is an apocalyptic number.

28246251 is a deficient number, since it is larger than the sum of its proper divisors (12839253).

28246251 is a wasteful number, since it uses less digits than its factorization.

28246251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855961.

The product of its digits is 7680, while the sum is 30.

The square root of 28246251 is about 5314.7202184123. The cubic root of 28246251 is about 304.5464943388.

The spelling of 28246251 in words is "twenty-eight million, two hundred forty-six thousand, two hundred fifty-one".