19934416 has 40 divisors (see below), whose sum is σ = 40108544. Its totient is φ = 9590400.

The previous prime is 19934377. The next prime is 19934417. The reversal of 19934416 is 61443991.

It is a super-2 number, since 2×19934416² = 794761882522112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19934417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89281 + ... + 89503.

Almost surely, 2^19934416 is an apocalyptic number.

19934416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19934416 is an abundant number, since it is smaller than the sum of its proper divisors (20174128).

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

19934416 is a wasteful number, since it uses less digits than its factorization.

19934416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 413 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 19934416 is about 4464.7974198165. The cubic root of 19934416 is about 271.1447328086.

It can be divided in two parts, 1993 and 4416, that multiplied together give a palindrome (8801088).

The spelling of 19934416 in words is "nineteen million, nine hundred thirty-four thousand, four hundred sixteen".