28102451 has 8 divisors (see below), whose sum is σ = 30334080. Its totient is φ = 25880832.

The previous prime is 28102447. The next prime is 28102453. The reversal of 28102451 is 15420182.

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 28102451 - 2² = 28102447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28102453) 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, 3971 + ... + 8483.

It is an arithmetic number, because the mean of its divisors is an integer number (3791760).

Almost surely, 2^28102451 is an apocalyptic number.

28102451 is a deficient number, since it is larger than the sum of its proper divisors (2231629).

28102451 is a wasteful number, since it uses less digits than its factorization.

28102451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 28102451 is about 5301.1744925064. The cubic root of 28102451 is about 304.0288054134.

The spelling of 28102451 in words is "twenty-eight million, one hundred two thousand, four hundred fifty-one".