2191794 has 24 divisors (see below), whose sum is σ = 4819920. Its totient is φ = 663960.

The previous prime is 2191727. The next prime is 2191799. The reversal of 2191794 is 4971912.

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

It is not an unprimeable number, because it can be changed into a prime (2191799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784 + ... + 2235.

It is an arithmetic number, because the mean of its divisors is an integer number (200830).

2^2191794 is an apocalyptic number.

2191794 is an abundant number, since it is smaller than the sum of its proper divisors (2628126).

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

2191794 is a wasteful number, since it uses less digits than its factorization.

2191794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046 (or 3035 counting only the distinct ones).

The product of its digits is 4536, while the sum is 33.

The square root of 2191794 is about 1480.4708710407. The cubic root of 2191794 is about 129.8972363420.

The spelling of 2191794 in words is "two million, one hundred ninety-one thousand, seven hundred ninety-four".