15983340 has 48 divisors (see below), whose sum is σ = 44927232. Its totient is φ = 4245696.

The previous prime is 15983333. The next prime is 15983347. The reversal of 15983340 is 4338951.

It is an interprime number because it is at equal distance from previous prime (15983333) and next prime (15983347).

It is not an unprimeable number, because it can be changed into a prime (15983347) 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, 28947 + ... + 29493.

It is an arithmetic number, because the mean of its divisors is an integer number (935984).

Almost surely, 2^15983340 is an apocalyptic number.

15983340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15983340 is an abundant number, since it is smaller than the sum of its proper divisors (28943892).

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

15983340 is a wasteful number, since it uses less digits than its factorization.

15983340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 15983340 is about 3997.9169576168. The cubic root of 15983340 is about 251.8967200861.

The spelling of 15983340 in words is "fifteen million, nine hundred eighty-three thousand, three hundred forty".