105640026 has 16 divisors (see below), whose sum is σ = 216433728. Its totient is φ = 34354400.

The previous prime is 105640001. The next prime is 105640027. The reversal of 105640026 is 620046501.

It is a super-2 number, since 2×105640026² = 22319630186561352, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 105639978 and 105640005.

It is not an unprimeable number, because it can be changed into a prime (105640027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214470 + ... + 214961.

It is an arithmetic number, because the mean of its divisors is an integer number (13527108).

Almost surely, 2^105640026 is an apocalyptic number.

105640026 is an abundant number, since it is smaller than the sum of its proper divisors (110793702).

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

105640026 is a wasteful number, since it uses less digits than its factorization.

105640026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429477.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 105640026 is about 10278.1333908449. The cubic root of 105640026 is about 472.7260115239.

Adding to 105640026 its reverse (620046501), we get a palindrome (725686527).

The spelling of 105640026 in words is "one hundred five million, six hundred forty thousand, twenty-six".