28474465 has 4 divisors (see below), whose sum is σ = 34169364. Its totient is φ = 22779568.

The previous prime is 28474451. The next prime is 28474469. The reversal of 28474465 is 56447482.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17338896 + 11135569 = 4164^2 + 3337^2 .

It is a cyclic number.

It is not a de Polignac number, because 28474465 - 2⁹ = 28473953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28474469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2847442 + ... + 2847451.

It is an arithmetic number, because the mean of its divisors is an integer number (8542341).

Almost surely, 2^28474465 is an apocalyptic number.

It is an amenable number.

28474465 is a deficient number, since it is larger than the sum of its proper divisors (5694899).

28474465 is an equidigital number, since it uses as much as digits as its factorization.

28474465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694898.

The product of its digits is 215040, while the sum is 40.

The square root of 28474465 is about 5336.1470182145. The cubic root of 28474465 is about 305.3644840816.

The spelling of 28474465 in words is "twenty-eight million, four hundred seventy-four thousand, four hundred sixty-five".