1428611 has 4 divisors (see below), whose sum is σ = 1438224. Its totient is φ = 1419000.

The previous prime is 1428601. The next prime is 1428613. The reversal of 1428611 is 1168241.

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 1428611 - 2¹⁴ = 1412227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428613) 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, 4580 + ... + 4881.

It is an arithmetic number, because the mean of its divisors is an integer number (359556).

2^1428611 is an apocalyptic number.

1428611 is a deficient number, since it is larger than the sum of its proper divisors (9613).

1428611 is an equidigital number, since it uses as much as digits as its factorization.

1428611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9612.

The product of its digits is 384, while the sum is 23.

The square root of 1428611 is about 1195.2451631360. The cubic root of 1428611 is about 112.6258279370.

The spelling of 1428611 in words is "one million, four hundred twenty-eight thousand, six hundred eleven".