19855036 has 12 divisors (see below), whose sum is σ = 34777512. Its totient is φ = 9918608.

The previous prime is 19855021. The next prime is 19855061. The reversal of 19855036 is 63055891.

It is a super-2 number, since 2×19855036² = 788444909122592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19854986 and 19855004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7731 + ... + 9973.

It is an arithmetic number, because the mean of its divisors is an integer number (2898126).

Almost surely, 2^19855036 is an apocalyptic number.

It is an amenable number.

19855036 is a deficient number, since it is larger than the sum of its proper divisors (14922476).

19855036 is a wasteful number, since it uses less digits than its factorization.

19855036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460 (or 4458 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 19855036 is about 4455.8990114229. The cubic root of 19855036 is about 270.7843493475.

It can be divided in two parts, 1985 and 5036, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 19855036 in words is "nineteen million, eight hundred fifty-five thousand, thirty-six".