105623438 has 16 divisors (see below), whose sum is σ = 160158384. Its totient is φ = 52240320.

The previous prime is 105623411. The next prime is 105623447. The reversal of 105623438 is 834326501.

It is a super-2 number, since 2×105623438² = 22312621309879688, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108293 + ... + 109263.

It is an arithmetic number, because the mean of its divisors is an integer number (10009899).

Almost surely, 2^105623438 is an apocalyptic number.

105623438 is a deficient number, since it is larger than the sum of its proper divisors (54534946).

105623438 is a wasteful number, since it uses less digits than its factorization.

105623438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 105623438 is about 10277.3264033016. The cubic root of 105623438 is about 472.7012671479.

Adding to 105623438 its reverse (834326501), we get a palindrome (939949939).

The spelling of 105623438 in words is "one hundred five million, six hundred twenty-three thousand, four hundred thirty-eight".