28474451 has 2 divisors, whose sum is σ = 28474452. Its totient is φ = 28474450.

The previous prime is 28474427. The next prime is 28474469. The reversal of 28474451 is 15447482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28474451 - 2⁶ = 28474387 is a prime.

It is not a weakly prime, because it can be changed into another prime (28474421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14237225 + 14237226.

It is an arithmetic number, because the mean of its divisors is an integer number (14237226).

Almost surely, 2^28474451 is an apocalyptic number.

28474451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28474451 is an equidigital number, since it uses as much as digits as its factorization.

28474451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 35.

The square root of 28474451 is about 5336.1457064065. The cubic root of 28474451 is about 305.3644340355.

The spelling of 28474451 in words is "twenty-eight million, four hundred seventy-four thousand, four hundred fifty-one".