105778432 has 18 divisors (see below), whose sum is σ = 211144178. Its totient is φ = 52889088.

The previous prime is 105778423. The next prime is 105778433. The reversal of 105778432 is 234877501.

It can be written as a sum of positive squares in only one way, i.e., 98724096 + 7054336 = 9936^2 + 2656^2 .

It is a super-2 number, since 2×105778432² = 22378153352757248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105778391 and 105778400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105778433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206343 + ... + 206854.

Almost surely, 2^105778432 is an apocalyptic number.

It is an amenable number.

105778432 is a deficient number, since it is larger than the sum of its proper divisors (105365746).

105778432 is an frugal number, since it uses more digits than its factorization.

105778432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413213 (or 413199 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 105778432 is about 10284.8642188412. The cubic root of 105778432 is about 472.9323713217.

The spelling of 105778432 in words is "one hundred five million, seven hundred seventy-eight thousand, four hundred thirty-two".