19247140 has 48 divisors (see below), whose sum is σ = 44634240. Its totient is φ = 6913280.

The previous prime is 19247117. The next prime is 19247149. The reversal of 19247140 is 4174291.

It is a zygodrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 19247099 and 19247108.

It is not an unprimeable number, because it can be changed into a prime (19247149) 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, 19089 + ... + 20071.

It is an arithmetic number, because the mean of its divisors is an integer number (929880).

Almost surely, 2^19247140 is an apocalyptic number.

19247140 is a gapful number since it is divisible by the number (10) 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 19247140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22317120).

19247140 is an abundant number, since it is smaller than the sum of its proper divisors (25387100).

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

19247140 is a wasteful number, since it uses less digits than its factorization.

19247140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 19247140 is about 4387.1562543406. The cubic root of 19247140 is about 267.9921472415.

The spelling of 19247140 in words is "nineteen million, two hundred forty-seven thousand, one hundred forty".