2164734 has 72 divisors (see below), whose sum is σ = 5706792. Its totient is φ = 584640.

The previous prime is 2164681. The next prime is 2164739. The reversal of 2164734 is 4374612.

It is a junction number, because it is equal to n+sod(n) for n = 2164698 and 2164707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164739) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 74632 + ... + 74660.

It is an arithmetic number, because the mean of its divisors is an integer number (79261).

2^2164734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2164734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2853396).

2164734 is an abundant number, since it is smaller than the sum of its proper divisors (3542058).

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

2164734 is a wasteful number, since it uses less digits than its factorization.

2164734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 58 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 2164734 is about 1471.3035037000. The cubic root of 2164734 is about 129.3604485489.

It can be divided in two parts, 216 and 4734, that added together give a triangular number (4950 = T₉₉).

The spelling of 2164734 in words is "two million, one hundred sixty-four thousand, seven hundred thirty-four".