19449416 has 64 divisors (see below), whose sum is σ = 43908480. Its totient is φ = 7902720.

The previous prime is 19449413. The next prime is 19449433. The reversal of 19449416 is 61494491.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19449416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19449413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98630 + ... + 98826.

It is an arithmetic number, because the mean of its divisors is an integer number (686070).

Almost surely, 2^19449416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19449416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21954240).

19449416 is an abundant number, since it is smaller than the sum of its proper divisors (24459064).

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

19449416 is a wasteful number, since it uses less digits than its factorization.

19449416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 290 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 19449416 is about 4410.1492038252. The cubic root of 19449416 is about 268.9276902421.

The spelling of 19449416 in words is "nineteen million, four hundred forty-nine thousand, four hundred sixteen".