1428065465 has 8 divisors (see below), whose sum is σ = 1755475848. Its totient is φ = 1114587520.

The previous prime is 1428065447. The next prime is 1428065477. The reversal of 1428065465 is 5645608241.

It can be written as a sum of positive squares in 4 ways, for example, as 13402921 + 1414662544 = 3661^2 + 37612^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1428065465 - 2²⁰ = 1427016889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3482882 + ... + 3483291.

It is an arithmetic number, because the mean of its divisors is an integer number (219434481).

Almost surely, 2^1428065465 is an apocalyptic number.

It is an amenable number.

1428065465 is a deficient number, since it is larger than the sum of its proper divisors (327410383).

1428065465 is an equidigital number, since it uses as much as digits as its factorization.

1428065465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6966219.

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 1428065465 is about 37789.7534392592. The cubic root of 1428065465 is about 1126.1149019832.

The spelling of 1428065465 in words is "one billion, four hundred twenty-eight million, sixty-five thousand, four hundred sixty-five".