2175492440 has 64 divisors (see below), whose sum is σ = 5349576960. Its totient is φ = 789646720.

The previous prime is 2175492433. The next prime is 2175492497. The reversal of 2175492440 is 442945712.

It is a junction number, because it is equal to n+sod(n) for n = 2175492394 and 2175492403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254069 + ... + 262491.

It is an arithmetic number, because the mean of its divisors is an integer number (83587140).

Almost surely, 2^2175492440 is an apocalyptic number.

2175492440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2175492440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2674788480).

2175492440 is an abundant number, since it is smaller than the sum of its proper divisors (3174084520).

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

2175492440 is a wasteful number, since it uses less digits than its factorization.

2175492440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9032 (or 9028 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 2175492440 is about 46642.1744776120. The cubic root of 2175492440 is about 1295.7439591612.

The spelling of 2175492440 in words is "two billion, one hundred seventy-five million, four hundred ninety-two thousand, four hundred forty".