19234540 has 48 divisors (see below), whose sum is σ = 45017280. Its totient is φ = 6854400.

The previous prime is 19234519. The next prime is 19234543. The reversal of 19234540 is 4543291.

It is a junction number, because it is equal to n+sod(n) for n = 19234499 and 19234508.

It is not an unprimeable number, because it can be changed into a prime (19234543) 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, 6265 + ... + 8815.

It is an arithmetic number, because the mean of its divisors is an integer number (937860).

Almost surely, 2^19234540 is an apocalyptic number.

19234540 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 19234540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22508640).

19234540 is an abundant number, since it is smaller than the sum of its proper divisors (25782740).

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

19234540 is a wasteful number, since it uses less digits than its factorization.

19234540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602 (or 2600 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 19234540 is about 4385.7200093029. The cubic root of 19234540 is about 267.9336547734.

The spelling of 19234540 in words is "nineteen million, two hundred thirty-four thousand, five hundred forty".