107781512 has 8 divisors (see below), whose sum is σ = 202090350. Its totient is φ = 53890752.

The previous prime is 107781511. The next prime is 107781529. The reversal of 107781512 is 215187701.

It can be written as a sum of positive squares in only one way, i.e., 91508356 + 16273156 = 9566^2 + 4034^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×107781512² = 23233708658012288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (107781511) 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, 6736337 + ... + 6736352.

Almost surely, 2^107781512 is an apocalyptic number.

It is an amenable number.

107781512 is a deficient number, since it is larger than the sum of its proper divisors (94308838).

107781512 is a wasteful number, since it uses less digits than its factorization.

107781512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13472695 (or 13472691 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 32.

The square root of 107781512 is about 10381.7875146817. The cubic root of 107781512 is about 475.8989616772.

The spelling of 107781512 in words is "one hundred seven million, seven hundred eighty-one thousand, five hundred twelve".