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1330426 = 2665213
BaseRepresentation
bin101000100110011111010
32111121000001
411010303322
5320033201
644303214
714210536
oct5046372
92447001
101330426
11829629
12541b0a
13377746
14268bc6
151b4301
hex144cfa

1330426 has 4 divisors (see below), whose sum is σ = 1995642. Its totient is φ = 665212.

The previous prime is 1330423. The next prime is 1330453. The reversal of 1330426 is 6240331.

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

It can be written as a sum of positive squares in only one way, i.e., 1324801 + 5625 = 1151^2 + 75^2 .

It is not an unprimeable number, because it can be changed into a prime (1330423) 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 as a sum of consecutive naturals, namely, 332605 + ... + 332608.

21330426 is an apocalyptic number.

1330426 is the 730-th centered pentagonal number.

1330426 is a deficient number, since it is larger than the sum of its proper divisors (665216).

1330426 is an equidigital number, since it uses as much as digits as its factorization.

1330426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665215.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1330426 is about 1153.4409391035. The cubic root of 1330426 is about 109.9841850542.

Adding to 1330426 its reverse (6240331), we get a palindrome (7570757).

It can be divided in two parts, 1330 and 426, that multiplied together give a triangular number (566580 = T1064).

The spelling of 1330426 in words is "one million, three hundred thirty thousand, four hundred twenty-six".

Divisors: 1 2 665213 1330426