2147656 has 16 divisors (see below), whose sum is σ = 4602240. Its totient is φ = 920400.

The previous prime is 2147641. The next prime is 2147657. The reversal of 2147656 is 6567412.

It is a happy number.

It is a super-2 number, since 2×2147656² = 9224852588672, which contains 22 as substring.

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 (2147657) 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 3 ways as a sum of consecutive naturals, for example, 19120 + ... + 19231.

It is an arithmetic number, because the mean of its divisors is an integer number (287640).

2^2147656 is an apocalyptic number.

It is an amenable number.

2147656 is an abundant number, since it is smaller than the sum of its proper divisors (2454584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2147656 is a wasteful number, since it uses less digits than its factorization.

2147656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38364 (or 38360 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 2147656 is about 1465.4883145218. The cubic root of 2147656 is about 129.0193669218.

The spelling of 2147656 in words is "two million, one hundred forty-seven thousand, six hundred fifty-six".