105785378 has 4 divisors (see below), whose sum is σ = 158678070. Its totient is φ = 52892688.

The previous prime is 105785377. The next prime is 105785389. The reversal of 105785378 is 873587501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 873587501 = 37 ⋅23610473.

It can be written as a sum of positive squares in only one way, i.e., 92294449 + 13490929 = 9607^2 + 3673^2 .

It is a super-2 number, since 2×105785378² = 22381092397205768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105785377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26446343 + ... + 26446346.

Almost surely, 2^105785378 is an apocalyptic number.

105785378 is a deficient number, since it is larger than the sum of its proper divisors (52892692).

105785378 is an equidigital number, since it uses as much as digits as its factorization.

105785378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52892691.

The product of its (nonzero) digits is 235200, while the sum is 44.

The square root of 105785378 is about 10285.2018939834. The cubic root of 105785378 is about 472.9427228849.

The spelling of 105785378 in words is "one hundred five million, seven hundred eighty-five thousand, three hundred seventy-eight".