1428961 has 4 divisors (see below), whose sum is σ = 1434132. Its totient is φ = 1423792.

The previous prime is 1428953. The next prime is 1428979. The reversal of 1428961 is 1698241.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 938961 + 490000 = 969^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428961 - 2³ = 1428953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428991) 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, 2146 + ... + 2731.

It is an arithmetic number, because the mean of its divisors is an integer number (358533).

2^1428961 is an apocalyptic number.

It is an amenable number.

1428961 is a deficient number, since it is larger than the sum of its proper divisors (5171).

1428961 is an equidigital number, since it uses as much as digits as its factorization.

1428961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170.

The product of its digits is 3456, while the sum is 31.

The square root of 1428961 is about 1195.3915676464. The cubic root of 1428961 is about 112.6350247071.

The spelling of 1428961 in words is "one million, four hundred twenty-eight thousand, nine hundred sixty-one".