19147212 has 192 divisors, whose sum is σ = 63078400. Its totient is φ = 4898880.

The previous prime is 19147207. The next prime is 19147213. The reversal of 19147212 is 21274191.

19147212 is a `hidden beast` number, since 191 + 472 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (19147213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 445263 + ... + 445305.

Almost surely, 2^19147212 is an apocalyptic number.

19147212 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 19147212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31539200).

19147212 is an abundant number, since it is smaller than the sum of its proper divisors (43931188).

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

19147212 is a wasteful number, since it uses less digits than its factorization.

19147212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 105 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 19147212 is about 4375.7527352445. The cubic root of 19147212 is about 267.5275518248.

The spelling of 19147212 in words is "nineteen million, one hundred forty-seven thousand, two hundred twelve".