1428011 has 4 divisors (see below), whose sum is σ = 1537872. Its totient is φ = 1318152.

The previous prime is 1427999. The next prime is 1428013. The reversal of 1428011 is 1108241.

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 1428011 - 2¹⁰ = 1426987 is a prime.

It is a super-2 number, since 2×1428011² = 4078430832242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54911 + ... + 54936.

It is an arithmetic number, because the mean of its divisors is an integer number (384468).

2^1428011 is an apocalyptic number.

1428011 is a deficient number, since it is larger than the sum of its proper divisors (109861).

1428011 is a wasteful number, since it uses less digits than its factorization.

1428011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109860.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1428011 is about 1194.9941422451. The cubic root of 1428011 is about 112.6100585499.

It can be divided in two parts, 14280 and 11, that multiplied together give a triangular number (157080 = T₅₆₀).

The spelling of 1428011 in words is "one million, four hundred twenty-eight thousand, eleven".