28242451 has 8 divisors (see below), whose sum is σ = 29114208. Its totient is φ = 27384000.

The previous prime is 28242449. The next prime is 28242463. The reversal of 28242451 is 15424282.

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 28242451 - 2¹ = 28242449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28243451) 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, 1071 + ... + 7591.

It is an arithmetic number, because the mean of its divisors is an integer number (3639276).

Almost surely, 2^28242451 is an apocalyptic number.

28242451 is a deficient number, since it is larger than the sum of its proper divisors (871757).

28242451 is an equidigital number, since it uses as much as digits as its factorization.

28242451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6653.

The product of its digits is 5120, while the sum is 28.

The square root of 28242451 is about 5314.3627087356. The cubic root of 28242451 is about 304.5328367319.

The spelling of 28242451 in words is "twenty-eight million, two hundred forty-two thousand, four hundred fifty-one".