15996340 has 12 divisors (see below), whose sum is σ = 33592356. Its totient is φ = 6398528.

The previous prime is 15996329. The next prime is 15996349. The reversal of 15996340 is 4369951.

15996340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8444836 + 7551504 = 2906^2 + 2748^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15996340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15996349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399889 + ... + 399928.

It is an arithmetic number, because the mean of its divisors is an integer number (2799363).

Almost surely, 2^15996340 is an apocalyptic number.

15996340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15996340 is an abundant number, since it is smaller than the sum of its proper divisors (17596016).

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

15996340 is a wasteful number, since it uses less digits than its factorization.

15996340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799826 (or 799824 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 15996340 is about 3999.5424738337. The cubic root of 15996340 is about 251.9649947177.

The spelling of 15996340 in words is "fifteen million, nine hundred ninety-six thousand, three hundred forty".