2172634 has 8 divisors (see below), whose sum is σ = 3450708. Its totient is φ = 1022400.

The previous prime is 2172619. The next prime is 2172641. The reversal of 2172634 is 4362712.

It can be written as a sum of positive squares in 2 ways, for example, as 1809025 + 363609 = 1345^2 + 603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2172599 and 2172608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31917 + ... + 31984.

2^2172634 is an apocalyptic number.

2172634 is a deficient number, since it is larger than the sum of its proper divisors (1278074).

2172634 is a wasteful number, since it uses less digits than its factorization.

2172634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63920.

The product of its digits is 2016, while the sum is 25.

The square root of 2172634 is about 1473.9857529841. The cubic root of 2172634 is about 129.5176205755.

The spelling of 2172634 in words is "two million, one hundred seventy-two thousand, six hundred thirty-four".