2147247 has 24 divisors (see below), whose sum is σ = 3385200. Its totient is φ = 1306368.

The previous prime is 2147237. The next prime is 2147251. The reversal of 2147247 is 7427412.

It is a happy number.

2147247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2147247 - 2⁴ = 2147231 is a prime.

It is a super-2 number, since 2×2147247² = 9221339358018, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁵ + 1 + 4⁴ + 7³ + 2²¹ + 4⁷ + 7³ .

It is a self number, because there is not a number n which added to its sum of digits gives 2147247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4743 + ... + 5175.

It is an arithmetic number, because the mean of its divisors is an integer number (141050).

2^2147247 is an apocalyptic number.

2147247 is a deficient number, since it is larger than the sum of its proper divisors (1237953).

2147247 is a wasteful number, since it uses less digits than its factorization.

2147247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 484 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 2147247 is about 1465.3487639467. The cubic root of 2147247 is about 129.0111762446.

The spelling of 2147247 in words is "two million, one hundred forty-seven thousand, two hundred forty-seven".