828427 has 4 divisors (see below), whose sum is σ = 877176. Its totient is φ = 779680.

The previous prime is 828409. The next prime is 828431. The reversal of 828427 is 724828.

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

It is a cyclic number.

It is not a de Polignac number, because 828427 - 2¹¹ = 826379 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 8³ + 2⁴ + 4 + 8⁴ + 2⁸ + 7⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828407) 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, 24349 + ... + 24382.

It is an arithmetic number, because the mean of its divisors is an integer number (219294).

2⁸²⁸⁴²⁷ is an apocalyptic number.

828427 is a deficient number, since it is larger than the sum of its proper divisors (48749).

828427 is a wasteful number, since it uses less digits than its factorization.

828427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48748.

The product of its digits is 7168, while the sum is 31.

The square root of 828427 is about 910.1796525961. The cubic root of 828427 is about 93.9185577969.

The spelling of 828427 in words is "eight hundred twenty-eight thousand, four hundred twenty-seven".