2189746 has 8 divisors (see below), whose sum is σ = 3537324. Its totient is φ = 1010640.

The previous prime is 2189743. The next prime is 2189767. The reversal of 2189746 is 6479812.

It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 55225 = 1461^2 + 235^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2189741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42085 + ... + 42136.

2^2189746 is an apocalyptic number.

2189746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2189746 is a deficient number, since it is larger than the sum of its proper divisors (1347578).

2189746 is a wasteful number, since it uses less digits than its factorization.

2189746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84236.

The product of its digits is 24192, while the sum is 37.

The square root of 2189746 is about 1479.7790375593. The cubic root of 2189746 is about 129.8567653182.

The spelling of 2189746 in words is "two million, one hundred eighty-nine thousand, seven hundred forty-six".