2161692 has 72 divisors (see below), whose sum is σ = 6115200. Its totient is φ = 639360.

The previous prime is 2161639. The next prime is 2161697. The reversal of 2161692 is 2961612.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14434 + ... + 14582.

2^2161692 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 2161692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3057600).

2161692 is an abundant number, since it is smaller than the sum of its proper divisors (3953508).

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

2161692 is a wasteful number, since it uses less digits than its factorization.

2161692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 198 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2161692 is about 1470.2693630760. The cubic root of 2161692 is about 129.2998254027.

The spelling of 2161692 in words is "two million, one hundred sixty-one thousand, six hundred ninety-two".