2921672 has 24 divisors (see below), whose sum is σ = 5934690. Its totient is φ = 1347840.

The previous prime is 2921647. The next prime is 2921689. The reversal of 2921672 is 2761292.

It can be written as a sum of positive squares in 3 ways, for example, as 1653796 + 1267876 = 1286^2 + 1126^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 272 + ... + 2432.

2^2921672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2921672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2967345).

2921672 is an abundant number, since it is smaller than the sum of its proper divisors (3013018).

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

2921672 is a wasteful number, since it uses less digits than its factorization.

2921672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2176 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

The square root of 2921672 is about 1709.2899110449. The cubic root of 2921672 is about 142.9586657394.

The spelling of 2921672 in words is "two million, nine hundred twenty-one thousand, six hundred seventy-two".