19383240 has 32 divisors (see below), whose sum is σ = 58150080. Its totient is φ = 5168832.

The previous prime is 19383209. The next prime is 19383251. The reversal of 19383240 is 4238391.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 19383198 and 19383207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80644 + ... + 80883.

It is an arithmetic number, because the mean of its divisors is an integer number (1817190).

Almost surely, 2^19383240 is an apocalyptic number.

19383240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19383240 is an abundant number, since it is smaller than the sum of its proper divisors (38766840).

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

19383240 is a wasteful number, since it uses less digits than its factorization.

19383240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161541 (or 161537 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 19383240 is about 4402.6401170207. The cubic root of 19383240 is about 268.6223377808.

The spelling of 19383240 in words is "nineteen million, three hundred eighty-three thousand, two hundred forty".