2159916 has 24 divisors (see below), whose sum is σ = 5498304. Its totient is φ = 654480.

The previous prime is 2159903. The next prime is 2159923. The reversal of 2159916 is 6199512.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 8050 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (229096).

2^2159916 is an apocalyptic number.

It is an amenable number.

2159916 is an abundant number, since it is smaller than the sum of its proper divisors (3338388).

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

2159916 is a wasteful number, since it uses less digits than its factorization.

2159916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16381 (or 16379 counting only the distinct ones).

The product of its digits is 4860, while the sum is 33.

The square root of 2159916 is about 1469.6652680117. The cubic root of 2159916 is about 129.2644057088.

The spelling of 2159916 in words is "two million, one hundred fifty-nine thousand, nine hundred sixteen".