19049216 has 18 divisors (see below), whose sum is σ = 38024532. Its totient is φ = 9524480.

The previous prime is 19049213. The next prime is 19049237. The reversal of 19049216 is 61294091.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (19049213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36950 + ... + 37461.

It is an arithmetic number, because the mean of its divisors is an integer number (2112474).

Almost surely, 2^19049216 is an apocalyptic number.

19049216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19049216 is a deficient number, since it is larger than the sum of its proper divisors (18975316).

19049216 is an frugal number, since it uses more digits than its factorization.

19049216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74427 (or 74413 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 19049216 is about 4364.5407547645. The cubic root of 19049216 is about 267.0703663191.

The spelling of 19049216 in words is "nineteen million, forty-nine thousand, two hundred sixteen".