2144459240 has 64 divisors (see below), whose sum is σ = 6015634560. Its totient is φ = 668401920.

The previous prime is 2144459227. The next prime is 2144459249. The reversal of 2144459240 is 429544412.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2144459240.

It is not an unprimeable number, because it can be changed into a prime (2144459249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345047 + ... + 351206.

It is an arithmetic number, because the mean of its divisors is an integer number (93994290).

Almost surely, 2^2144459240 is an apocalyptic number.

2144459240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144459240 is an abundant number, since it is smaller than the sum of its proper divisors (3871175320).

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

2144459240 is a wasteful number, since it uses less digits than its factorization.

2144459240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696282 (or 696278 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 2144459240 is about 46308.3063823327. The cubic root of 2144459240 is about 1289.5532054442.

The spelling of 2144459240 in words is "two billion, one hundred forty-four million, four hundred fifty-nine thousand, two hundred forty".