105623540 has 24 divisors (see below), whose sum is σ = 241974432. Its totient is φ = 38408480.

The previous prime is 105623519. The next prime is 105623549. The reversal of 105623540 is 45326501.

It is a super-2 number, since 2×105623540² = 22312664404263200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105623549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239834 + ... + 240273.

It is an arithmetic number, because the mean of its divisors is an integer number (10082268).

Almost surely, 2^105623540 is an apocalyptic number.

105623540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105623540 is an abundant number, since it is smaller than the sum of its proper divisors (136350892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105623540 is a wasteful number, since it uses less digits than its factorization.

105623540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480127 (or 480125 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 105623540 is about 10277.3313656805. The cubic root of 105623540 is about 472.7014193096.

The spelling of 105623540 in words is "one hundred five million, six hundred twenty-three thousand, five hundred forty".