2175420 has 48 divisors (see below), whose sum is σ = 6562080. Its totient is φ = 535296.

The previous prime is 2175391. The next prime is 2175431. The reversal of 2175420 is 245712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615 + ... + 2174.

It is an arithmetic number, because the mean of its divisors is an integer number (136710).

2^2175420 is an apocalyptic number.

2175420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2175420 is an abundant number, since it is smaller than the sum of its proper divisors (4386660).

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

2175420 is a wasteful number, since it uses less digits than its factorization.

2175420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814 (or 2812 counting only the distinct ones).

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

The square root of 2175420 is about 1474.9305068375. The cubic root of 2175420 is about 129.5729577018.

The spelling of 2175420 in words is "two million, one hundred seventy-five thousand, four hundred twenty".