19216368 has 30 divisors (see below), whose sum is σ = 53779544. Its totient is φ = 6405408.

The previous prime is 19216367. The next prime is 19216397. The reversal of 19216368 is 86361291.

19216368 is a `hidden beast` number, since 19 + 2 + 1 + 636 + 8 = 666.

It is a super-2 number, since 2×19216368² = 738537598222848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19216367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66580 + ... + 66867.

Almost surely, 2^19216368 is an apocalyptic number.

19216368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19216368 is an abundant number, since it is smaller than the sum of its proper divisors (34563176).

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

19216368 is a wasteful number, since it uses less digits than its factorization.

19216368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133461 (or 133452 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 19216368 is about 4383.6477960712. The cubic root of 19216368 is about 267.8492506322.

The spelling of 19216368 in words is "nineteen million, two hundred sixteen thousand, three hundred sixty-eight".