2171190 has 64 divisors (see below), whose sum is σ = 6105600. Its totient is φ = 493920.

The previous prime is 2171161. The next prime is 2171203. The reversal of 2171190 is 911712.

It is a super-2 number, since 2×2171190² = 9428132032200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10185 + ... + 10395.

It is an arithmetic number, because the mean of its divisors is an integer number (95400).

2^2171190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2171190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3052800).

2171190 is an abundant number, since it is smaller than the sum of its proper divisors (3934410).

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

2171190 is a wasteful number, since it uses less digits than its factorization.

2171190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 2171190 is about 1473.4958432245. The cubic root of 2171190 is about 129.4889204059.

The spelling of 2171190 in words is "two million, one hundred seventy-one thousand, one hundred ninety".