19019712 has 112 divisors (see below), whose sum is σ = 54132480. Its totient is φ = 5879808.

The previous prime is 19019687. The next prime is 19019729. The reversal of 19019712 is 21791091.

19019712 = 474² + 475² + ... + 546².

It is a self number, because there is not a number n which added to its sum of digits gives 19019712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260508 + ... + 260580.

Almost surely, 2^19019712 is an apocalyptic number.

19019712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19019712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27066240).

19019712 is an abundant number, since it is smaller than the sum of its proper divisors (35112768).

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

19019712 is a wasteful number, since it uses less digits than its factorization.

19019712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 19019712 is about 4361.1594788542. The cubic root of 19019712 is about 266.9324128609.

The spelling of 19019712 in words is "nineteen million, nineteen thousand, seven hundred twelve".