105019856 has 20 divisors (see below), whose sum is σ = 205082112. Its totient is φ = 52095456.

The previous prime is 105019853. The next prime is 105019867. The reversal of 105019856 is 658910501.

It is a super-2 number, since 2×105019856² = 22058340308521472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105019853) 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, 23810 + ... + 27873.

Almost surely, 2^105019856 is an apocalyptic number.

105019856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

105019856 is a deficient number, since it is larger than the sum of its proper divisors (100062256).

105019856 is a wasteful number, since it uses less digits than its factorization.

105019856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51818 (or 51812 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 105019856 is about 10247.9195937517. The cubic root of 105019856 is about 471.7991341039.

The spelling of 105019856 in words is "one hundred five million, nineteen thousand, eight hundred fifty-six".