105440330 has 16 divisors (see below), whose sum is σ = 192905064. Its totient is φ = 41484480.

The previous prime is 105440311. The next prime is 105440371. The reversal of 105440330 is 33044501.

It can be written as a sum of positive squares in 4 ways, for example, as 25391521 + 80048809 = 5039^2 + 8947^2 .

It is a super-3 number, since 3×105440330³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85817 + ... + 87036.

Almost surely, 2^105440330 is an apocalyptic number.

105440330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105440330 is a deficient number, since it is larger than the sum of its proper divisors (87464734).

105440330 is a wasteful number, since it uses less digits than its factorization.

105440330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172921.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 105440330 is about 10268.4141911008. The cubic root of 105440330 is about 472.4279520241.

Adding to 105440330 its reverse (33044501), we get a palindrome (138484831).

The spelling of 105440330 in words is "one hundred five million, four hundred forty thousand, three hundred thirty".