2101672 has 8 divisors (see below), whose sum is σ = 3940650. Its totient is φ = 1050832.

The previous prime is 2101669. The next prime is 2101681. The reversal of 2101672 is 2761012.

2101672 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in only one way, i.e., 1758276 + 343396 = 1326^2 + 586^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131347 + ... + 131362.

2^2101672 is an apocalyptic number.

It is an amenable number.

2101672 is a deficient number, since it is larger than the sum of its proper divisors (1838978).

2101672 is a wasteful number, since it uses less digits than its factorization.

2101672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262715 (or 262711 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 2101672 is about 1449.7144546427. The cubic root of 2101672 is about 128.0918936474.

Adding to 2101672 its reverse (2761012), we get a palindrome (4862684).

The spelling of 2101672 in words is "two million, one hundred one thousand, six hundred seventy-two".