Search a number
-
+
10400440321 = 27533777857
BaseRepresentation
bin10011010111110101…
…00010000000000001
3222211211021002222101
421223322202000001
5132300003042241
64440005310401
7515506166305
oct115372420001
928754232871
1010400440321
114457860827
122023105401
13c999542cb
147093ddd05
1540d10be31
hex26bea2001

10400440321 has 4 divisors (see below), whose sum is σ = 10404220932. Its totient is φ = 10396659712.

The previous prime is 10400440189. The next prime is 10400440331. The reversal of 10400440321 is 12304400401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12304400401 = 29424289669.

It can be written as a sum of positive squares in 2 ways, for example, as 9568752400 + 831687921 = 97820^2 + 28839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10400440321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10400440331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1886176 + ... + 1891681.

It is an arithmetic number, because the mean of its divisors is an integer number (2601055233).

Almost surely, 210400440321 is an apocalyptic number.

It is an amenable number.

10400440321 is a deficient number, since it is larger than the sum of its proper divisors (3780611).

10400440321 is an equidigital number, since it uses as much as digits as its factorization.

10400440321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780610.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10400440321 its reverse (12304400401), we get a palindrome (22704840722).

The spelling of 10400440321 in words is "ten billion, four hundred million, four hundred forty thousand, three hundred twenty-one".

Divisors: 1 2753 3777857 10400440321