2153847 has 8 divisors (see below), whose sum is σ = 2878720. Its totient is φ = 1432440.

The previous prime is 2153839. The next prime is 2153861. The reversal of 2153847 is 7483512.

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

It is not a de Polignac number, because 2153847 - 2³ = 2153839 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554 + ... + 2592.

It is an arithmetic number, because the mean of its divisors is an integer number (359840).

2^2153847 is an apocalyptic number.

2153847 is a deficient number, since it is larger than the sum of its proper divisors (724873).

2153847 is a wasteful number, since it uses less digits than its factorization.

2153847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733.

The product of its digits is 6720, while the sum is 30.

The square root of 2153847 is about 1467.5990596890. The cubic root of 2153847 is about 129.1432217362.

The spelling of 2153847 in words is "two million, one hundred fifty-three thousand, eight hundred forty-seven".