19140856 has 32 divisors (see below), whose sum is σ = 41328000. Its totient is φ = 8140896.

The previous prime is 19140851. The next prime is 19140871. The reversal of 19140856 is 65804191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19140851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6555 + ... + 9013.

It is an arithmetic number, because the mean of its divisors is an integer number (1291500).

Almost surely, 2^19140856 is an apocalyptic number.

It is an amenable number.

19140856 is an abundant number, since it is smaller than the sum of its proper divisors (22187144).

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

19140856 is a wasteful number, since it uses less digits than its factorization.

19140856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611 (or 2607 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 19140856 is about 4375.0263999203. The cubic root of 19140856 is about 267.4979462386.

The spelling of 19140856 in words is "nineteen million, one hundred forty thousand, eight hundred fifty-six".