2153870 has 16 divisors (see below), whose sum is σ = 3967920. Its totient is φ = 841344.

The previous prime is 2153861. The next prime is 2153873. The reversal of 2153870 is 783512.

2153870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153873) 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 7 ways as a sum of consecutive naturals, for example, 2075 + ... + 2934.

It is an arithmetic number, because the mean of its divisors is an integer number (247995).

2^2153870 is an apocalyptic number.

2153870 is a deficient number, since it is larger than the sum of its proper divisors (1814050).

2153870 is a wasteful number, since it uses less digits than its factorization.

2153870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2153870 is about 1467.6068955957. The cubic root of 2153870 is about 129.1436814228.

The spelling of 2153870 in words is "two million, one hundred fifty-three thousand, eight hundred seventy".