28494451 has 2 divisors, whose sum is σ = 28494452. Its totient is φ = 28494450.

The previous prime is 28494439. The next prime is 28494457. The reversal of 28494451 is 15449482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28494451 - 2²¹ = 26397299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28494451.

It is not a weakly prime, because it can be changed into another prime (28494457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14247225 + 14247226.

It is an arithmetic number, because the mean of its divisors is an integer number (14247226).

Almost surely, 2^28494451 is an apocalyptic number.

28494451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28494451 is an equidigital number, since it uses as much as digits as its factorization.

28494451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 37.

The square root of 28494451 is about 5338.0193892492. The cubic root of 28494451 is about 305.4359116718.

The spelling of 28494451 in words is "twenty-eight million, four hundred ninety-four thousand, four hundred fifty-one".