105049988 has 6 divisors (see below), whose sum is σ = 183837486. Its totient is φ = 52524992.

The previous prime is 105049981. The next prime is 105050003. The reversal of 105049988 is 889940501.

It can be written as a sum of positive squares in only one way, i.e., 55234624 + 49815364 = 7432^2 + 7058^2 .

It is a super-2 number, since 2×105049988² = 22070999957600288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105049981) 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 as a sum of consecutive naturals, namely, 13131245 + ... + 13131252.

It is an arithmetic number, because the mean of its divisors is an integer number (30639581).

Almost surely, 2^105049988 is an apocalyptic number.

It is an amenable number.

105049988 is a deficient number, since it is larger than the sum of its proper divisors (78787498).

105049988 is a wasteful number, since it uses less digits than its factorization.

105049988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26262501 (or 26262499 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 105049988 is about 10249.3896403640. The cubic root of 105049988 is about 471.8442522134.

The spelling of 105049988 in words is "one hundred five million, forty-nine thousand, nine hundred eighty-eight".