28679251 has 8 divisors (see below), whose sum is σ = 29277360. Its totient is φ = 28084992.

The previous prime is 28679249. The next prime is 28679281. The reversal of 28679251 is 15297682.

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 28679251 - 2¹ = 28679249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28679281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17691 + ... + 19243.

It is an arithmetic number, because the mean of its divisors is an integer number (3659670).

Almost surely, 2^28679251 is an apocalyptic number.

28679251 is a deficient number, since it is larger than the sum of its proper divisors (598109).

28679251 is a wasteful number, since it uses less digits than its factorization.

28679251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925.

The product of its digits is 60480, while the sum is 40.

The square root of 28679251 is about 5355.3012053478. The cubic root of 28679251 is about 306.0947881552.

It can be divided in two parts, 28 and 679251, that multiplied together give a triangular number (19019028 = T₆₁₆₇).

The spelling of 28679251 in words is "twenty-eight million, six hundred seventy-nine thousand, two hundred fifty-one".