2664172 has 48 divisors (see below), whose sum is σ = 5866560. Its totient is φ = 1032192.

The previous prime is 2664169. The next prime is 2664173. The reversal of 2664172 is 2714662.

2664172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 2664172.

It is not an unprimeable number, because it can be changed into a prime (2664173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13708 + ... + 13900.

It is an arithmetic number, because the mean of its divisors is an integer number (122220).

2^2664172 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 2664172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2933280).

2664172 is an abundant number, since it is smaller than the sum of its proper divisors (3202388).

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

2664172 is a wasteful number, since it uses less digits than its factorization.

2664172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 248 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 2664172 is about 1632.2291505790. The cubic root of 2664172 is about 138.6289987471.

The spelling of 2664172 in words is "two million, six hundred sixty-four thousand, one hundred seventy-two".