28301465 has 4 divisors (see below), whose sum is σ = 33961764. Its totient is φ = 22641168.

The previous prime is 28301461. The next prime is 28301479. The reversal of 28301465 is 56410382.

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 11095561 + 17205904 = 3331^2 + 4148^2 .

It is a cyclic number.

It is not a de Polignac number, because 28301465 - 2² = 28301461 is a prime.

It is a super-2 number, since 2×28301465² = 1601945842292450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28301461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2830142 + ... + 2830151.

It is an arithmetic number, because the mean of its divisors is an integer number (8490441).

Almost surely, 2^28301465 is an apocalyptic number.

It is an amenable number.

28301465 is a deficient number, since it is larger than the sum of its proper divisors (5660299).

28301465 is an equidigital number, since it uses as much as digits as its factorization.

28301465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660298.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28301465 is about 5319.9121233344. The cubic root of 28301465 is about 304.7448013114.

The spelling of 28301465 in words is "twenty-eight million, three hundred one thousand, four hundred sixty-five".