2190291 has 8 divisors (see below), whose sum is σ = 2988480. Its totient is φ = 1426152.

The previous prime is 2190277. The next prime is 2190299. The reversal of 2190291 is 1920912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2190291 - 2¹⁰ = 2189267 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2190299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8361 + ... + 8618.

It is an arithmetic number, because the mean of its divisors is an integer number (373560).

2^2190291 is an apocalyptic number.

2190291 is a deficient number, since it is larger than the sum of its proper divisors (798189).

2190291 is a wasteful number, since it uses less digits than its factorization.

2190291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17025.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 2190291 is about 1479.9631752175. The cubic root of 2190291 is about 129.8675376583.

The spelling of 2190291 in words is "two million, one hundred ninety thousand, two hundred ninety-one".