2187722 has 8 divisors (see below), whose sum is σ = 3312576. Its totient is φ = 1083532.

The previous prime is 2187707. The next prime is 2187727. The reversal of 2187722 is 2277812.

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

It is a super-2 number, since 2×2187722² = 9572255098568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2187727) 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, 4898 + ... + 5325.

It is an arithmetic number, because the mean of its divisors is an integer number (414072).

2^2187722 is an apocalyptic number.

2187722 is a deficient number, since it is larger than the sum of its proper divisors (1124854).

2187722 is a wasteful number, since it uses less digits than its factorization.

2187722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10332.

The product of its digits is 3136, while the sum is 29.

The square root of 2187722 is about 1479.0949935687. The cubic root of 2187722 is about 129.8167437642.

The spelling of 2187722 in words is "two million, one hundred eighty-seven thousand, seven hundred twenty-two".