2115044140 has 24 divisors (see below), whose sum is σ = 4845374352. Its totient is φ = 769106880.

The previous prime is 2115044117. The next prime is 2115044167. The reversal of 2115044140 is 414405112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

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, 4806699 + ... + 4807138.

It is an arithmetic number, because the mean of its divisors is an integer number (201890598).

Almost surely, 2^2115044140 is an apocalyptic number.

2115044140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115044140 is an abundant number, since it is smaller than the sum of its proper divisors (2730330212).

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

2115044140 is a wasteful number, since it uses less digits than its factorization.

2115044140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9613857 (or 9613855 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2115044140 is about 45989.6090437829. The cubic root of 2115044140 is about 1283.6298618022.

Adding to 2115044140 its reverse (414405112), we get a palindrome (2529449252).

The spelling of 2115044140 in words is "two billion, one hundred fifteen million, forty-four thousand, one hundred forty".