105140644 has 12 divisors (see below), whose sum is σ = 210281344. Its totient is φ = 45060264.

The previous prime is 105140639. The next prime is 105140647. The reversal of 105140644 is 446041501.

105140644 is an admirable number.

It is a super-2 number, since 2×105140644² = 22109110041469472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105140647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1877484 + ... + 1877539.

Almost surely, 2^105140644 is an apocalyptic number.

105140644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

105140644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

105140644 is a wasteful number, since it uses less digits than its factorization.

105140644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755034 (or 3755032 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 105140644 is about 10253.8111938927. The cubic root of 105140644 is about 471.9799438476.

The spelling of 105140644 in words is "one hundred five million, one hundred forty thousand, six hundred forty-four".