2167090 has 16 divisors (see below), whose sum is σ = 4006872. Its totient is φ = 843264.

The previous prime is 2167079. The next prime is 2167091. The reversal of 2167090 is 907612.

It can be written as a sum of positive squares in 4 ways, for example, as 2163841 + 3249 = 1471^2 + 57^2 .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2167091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2559 + ... + 3298.

2^2167090 is an apocalyptic number.

2167090 is a deficient number, since it is larger than the sum of its proper divisors (1839782).

2167090 is a wasteful number, since it uses less digits than its factorization.

2167090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5901.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 2167090 is about 1472.1039365480. The cubic root of 2167090 is about 129.4073615825.

The spelling of 2167090 in words is "two million, one hundred sixty-seven thousand, ninety".