2117934 has 64 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 557280.

The previous prime is 2117903. The next prime is 2117953. The reversal of 2117934 is 4397112.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2117898 and 2117907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4699 + ... + 5129.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^2117934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2117934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903040).

2117934 is an abundant number, since it is smaller than the sum of its proper divisors (3688146).

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

2117934 is a wasteful number, since it uses less digits than its factorization.

2117934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 456 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 2117934 is about 1455.3123376100. The cubic root of 2117934 is about 128.4214218778.

It can be divided in two parts, 21 and 17934, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 2117934 in words is "two million, one hundred seventeen thousand, nine hundred thirty-four".