2172430 has 32 divisors (see below), whose sum is σ = 4463424. Its totient is φ = 754176.

The previous prime is 2172427. The next prime is 2172433. The reversal of 2172430 is 342712.

It is an interprime number because it is at equal distance from previous prime (2172427) and next prime (2172433).

It is a junction number, because it is equal to n+sod(n) for n = 2172398 and 2172407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1719 + ... + 2701.

It is an arithmetic number, because the mean of its divisors is an integer number (139482).

2^2172430 is an apocalyptic number.

2172430 is an abundant number, since it is smaller than the sum of its proper divisors (2290994).

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

2172430 is a wasteful number, since it uses less digits than its factorization.

2172430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2172430 is about 1473.9165512335. The cubic root of 2172430 is about 129.5135667525.

The spelling of 2172430 in words is "two million, one hundred seventy-two thousand, four hundred thirty".