19345216 has 28 divisors (see below), whose sum is σ = 41879520. Its totient is φ = 8792960.

The previous prime is 19345199. The next prime is 19345217. The reversal of 19345216 is 61254391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19345217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13036 + ... + 14443.

Almost surely, 2^19345216 is an apocalyptic number.

19345216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19345216 is an abundant number, since it is smaller than the sum of its proper divisors (22534304).

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

19345216 is a wasteful number, since it uses less digits than its factorization.

19345216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27502 (or 27492 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 19345216 is about 4398.3196791502. The cubic root of 19345216 is about 268.4465711212.

The spelling of 19345216 in words is "nineteen million, three hundred forty-five thousand, two hundred sixteen".