28276451 has 8 divisors (see below), whose sum is σ = 32497920. Its totient is φ = 24100488.

The previous prime is 28276439. The next prime is 28276459. The reversal of 28276451 is 15467282.

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 28276451 - 2⁶ = 28276387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28276459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10031 + ... + 12536.

It is an arithmetic number, because the mean of its divisors is an integer number (4062240).

Almost surely, 2^28276451 is an apocalyptic number.

28276451 is a deficient number, since it is larger than the sum of its proper divisors (4221469).

28276451 is a wasteful number, since it uses less digits than its factorization.

28276451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22753.

The product of its digits is 26880, while the sum is 35.

The square root of 28276451 is about 5317.5606249482. The cubic root of 28276451 is about 304.6549928466.

The spelling of 28276451 in words is "twenty-eight million, two hundred seventy-six thousand, four hundred fifty-one".