1028465 has 8 divisors (see below), whose sum is σ = 1257768. Its totient is φ = 807040.

The previous prime is 1028437. The next prime is 1028471. The reversal of 1028465 is 5648201.

It can be written as a sum of positive squares in 4 ways, for example, as 238144 + 790321 = 488^2 + 889^2 .

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

It is not a de Polignac number, because 1028465 - 2¹⁸ = 766321 is a prime.

It is a super-3 number, since 3×1028465³ = 3263546497855333875, which contains 333 as substring.

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, 1676 + ... + 2205.

It is an arithmetic number, because the mean of its divisors is an integer number (157221).

2^1028465 is an apocalyptic number.

It is an amenable number.

1028465 is a deficient number, since it is larger than the sum of its proper divisors (229303).

1028465 is an equidigital number, since it uses as much as digits as its factorization.

1028465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1028465 is about 1014.1326343235. The cubic root of 1028465 is about 100.9399702099.

The spelling of 1028465 in words is "one million, twenty-eight thousand, four hundred sixty-five".