2190506 has 8 divisors (see below), whose sum is σ = 3362304. Its totient is φ = 1069740.

The previous prime is 2190499. The next prime is 2190521. The reversal of 2190506 is 6050912.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12650 + ... + 12821.

It is an arithmetic number, because the mean of its divisors is an integer number (420288).

2^2190506 is an apocalyptic number.

2190506 is a deficient number, since it is larger than the sum of its proper divisors (1171798).

2190506 is a wasteful number, since it uses less digits than its factorization.

2190506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25516.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 2190506 is about 1480.0358103776. The cubic root of 2190506 is about 129.8717868056.

The spelling of 2190506 in words is "two million, one hundred ninety thousand, five hundred six".