1361428 has 12 divisors (see below), whose sum is σ = 2522772. Its totient is φ = 640640.

The previous prime is 1361417. The next prime is 1361431. The reversal of 1361428 is 8241631.

It can be written as a sum of positive squares in 2 ways, for example, as 492804 + 868624 = 702^2 + 932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9943 + ... + 10078.

It is an arithmetic number, because the mean of its divisors is an integer number (210231).

2^1361428 is an apocalyptic number.

It is an amenable number.

1361428 is a deficient number, since it is larger than the sum of its proper divisors (1161344).

1361428 is a wasteful number, since it uses less digits than its factorization.

1361428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20042 (or 20040 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 1361428 is about 1166.8024682867. The cubic root of 1361428 is about 110.8319291786.

The spelling of 1361428 in words is "one million, three hundred sixty-one thousand, four hundred twenty-eight".