2147970 has 64 divisors (see below), whose sum is σ = 5889024. Its totient is φ = 496320.

The previous prime is 2147941. The next prime is 2147987. The reversal of 2147970 is 797412.

It is a super-2 number, since 2×2147970² = 9227550241800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7449 + ... + 7731.

It is an arithmetic number, because the mean of its divisors is an integer number (92016).

2^2147970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2147970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2944512).

2147970 is an abundant number, since it is smaller than the sum of its proper divisors (3741054).

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

2147970 is a wasteful number, since it uses less digits than its factorization.

2147970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 2147970 is about 1465.5954421327. The cubic root of 2147970 is about 129.0256544134.

The spelling of 2147970 in words is "two million, one hundred forty-seven thousand, nine hundred seventy".