105813612 has 18 divisors (see below), whose sum is σ = 267473388. Its totient is φ = 35271192.

The previous prime is 105813607. The next prime is 105813671. The reversal of 105813612 is 216318501.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×105813612² = 22393040968973088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1469598 + ... + 1469669.

Almost surely, 2^105813612 is an apocalyptic number.

105813612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

105813612 is an abundant number, since it is smaller than the sum of its proper divisors (161659776).

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

105813612 is a wasteful number, since it uses less digits than its factorization.

105813612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939277 (or 2939272 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 105813612 is about 10286.5743568984. The cubic root of 105813612 is about 472.9847951047.

The spelling of 105813612 in words is "one hundred five million, eight hundred thirteen thousand, six hundred twelve".