19047312 has 140 divisors (see below), whose sum is σ = 58549824. Its totient is φ = 5987520.

The previous prime is 19047307. The next prime is 19047313. The reversal of 19047312 is 21374091.

19047312 = 899² + 900² + ... + 921².

19047312 is a `hidden beast` number, since 190 + 473 + 1 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19047313) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 268237 + ... + 268307.

Almost surely, 2^19047312 is an apocalyptic number.

19047312 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 19047312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29274912).

19047312 is an abundant number, since it is smaller than the sum of its proper divisors (39502512).

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

19047312 is an equidigital number, since it uses as much as digits as its factorization.

19047312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 19047312 is about 4364.3226278542. The cubic root of 19047312 is about 267.0614679840.

It can be divided in two parts, 1904 and 7312, that added together give a square (9216 = 96²).

The spelling of 19047312 in words is "nineteen million, forty-seven thousand, three hundred twelve".