15953964 has 48 divisors (see below), whose sum is σ = 41395200. Its totient is φ = 4749120.

The previous prime is 15953963. The next prime is 15953981. The reversal of 15953964 is 46935951.

15953964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (15953963) 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, 3187 + ... + 6485.

It is an arithmetic number, because the mean of its divisors is an integer number (862400).

Almost surely, 2^15953964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15953964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20697600).

15953964 is an abundant number, since it is smaller than the sum of its proper divisors (25441236).

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

15953964 is a wasteful number, since it uses less digits than its factorization.

15953964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350 (or 3348 counting only the distinct ones).

The product of its digits is 145800, while the sum is 42.

The square root of 15953964 is about 3994.2413547506. The cubic root of 15953964 is about 251.7423039663.

The spelling of 15953964 in words is "fifteen million, nine hundred fifty-three thousand, nine hundred sixty-four".