2172450 has 48 divisors (see below), whose sum is σ = 6160320. Its totient is φ = 496320.

The previous prime is 2172433. The next prime is 2172461. The reversal of 2172450 is 542712.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (128340).

2^2172450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2172450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3080160).

2172450 is an abundant number, since it is smaller than the sum of its proper divisors (3987870).

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

2172450 is a wasteful number, since it uses less digits than its factorization.

2172450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2086 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2172450 is about 1473.9233358625. The cubic root of 2172450 is about 129.5139641973.

The spelling of 2172450 in words is "two million, one hundred seventy-two thousand, four hundred fifty".