1066428 has 36 divisors (see below), whose sum is σ = 2941848. Its totient is φ = 323040.

The previous prime is 1066423. The next prime is 1066433. The reversal of 1066428 is 8246601.

1066428 is a `hidden beast` number, since 10 + 6 + 642 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1066423) and next prime (1066433).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1066428² = 2274537358368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 951 + ... + 1742.

It is an arithmetic number, because the mean of its divisors is an integer number (81718).

2^1066428 is an apocalyptic number.

1066428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1066428 is an abundant number, since it is smaller than the sum of its proper divisors (1875420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066428 is a wasteful number, since it uses less digits than its factorization.

1066428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714 (or 2709 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1066428 is about 1032.6800085215. The cubic root of 1066428 is about 102.1669698958.

The spelling of 1066428 in words is "one million, sixty-six thousand, four hundred twenty-eight".