867428 has 12 divisors (see below), whose sum is σ = 1559292. Its totient is φ = 421920.

The previous prime is 867413. The next prime is 867431. The reversal of 867428 is 824768.

867428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 605284 + 262144 = 778^2 + 512^2 .

It is an unprimeable number.

867428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2783 + ... + 3078.

It is an arithmetic number, because the mean of its divisors is an integer number (129941).

2⁸⁶⁷⁴²⁸ is an apocalyptic number.

It is an amenable number.

867428 is a deficient number, since it is larger than the sum of its proper divisors (691864).

867428 is a wasteful number, since it uses less digits than its factorization.

867428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5902 (or 5900 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 867428 is about 931.3581480827. The cubic root of 867428 is about 95.3698601072.

The spelling of 867428 in words is "eight hundred sixty-seven thousand, four hundred twenty-eight".