19655056 has 10 divisors (see below), whose sum is σ = 38081702. Its totient is φ = 9827520.

The previous prime is 19655047. The next prime is 19655059. The reversal of 19655056 is 65055691.

It can be written as a sum of positive squares in only one way, i.e., 19219456 + 435600 = 4384^2 + 660^2 .

It is not an unprimeable number, because it can be changed into a prime (19655059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614205 + ... + 614236.

Almost surely, 2^19655056 is an apocalyptic number.

19655056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19655056 is a deficient number, since it is larger than the sum of its proper divisors (18426646).

19655056 is a wasteful number, since it uses less digits than its factorization.

19655056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228449 (or 1228443 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 19655056 is about 4433.4023052279. The cubic root of 19655056 is about 269.8721662803.

It can be divided in two parts, 1965 and 5056, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 19655056 in words is "nineteen million, six hundred fifty-five thousand, fifty-six".