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BaseRepresentation
bin110110111101100000100
310101111110101
412313230010
5430112324
6102333444
721210424
oct6675404
93344411
101800964
111020100
1272a284
134b0979
1434c484
15258944
hex1b7b04

1800964 has 27 divisors (see below), whose sum is σ = 3521973. Its totient is φ = 805200.

The previous prime is 1800961. The next prime is 1800973. The reversal of 1800964 is 4690081.

The square root of 1800964 is 1342.

It is a perfect power (a square), and thus also a powerful number.

1800964 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 58564 + 1742400 = 242^2 + 1320^2 .

It is a Duffinian number.

It is a zygodrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (1800961) 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 8 ways as a sum of consecutive naturals, for example, 29494 + ... + 29554.

21800964 is an apocalyptic number.

1800964 is the 1342-nd square number.

It is an amenable number.

1800964 is a deficient number, since it is larger than the sum of its proper divisors (1721009).

1800964 is a wasteful number, since it uses less digits than its factorization.

1800964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The cubic root of 1800964 is about 121.6657517498.

The spelling of 1800964 in words is "one million, eight hundred thousand, nine hundred sixty-four".