2140023444 has 48 divisors (see below), whose sum is σ = 5693825088. Its totient is φ = 619734528.

The previous prime is 2140023407. The next prime is 2140023469. The reversal of 2140023444 is 4443200412.

It is a happy number.

It is a super-2 number, since 2×2140023444² = 9159400681739242272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400822 + ... + 406125.

It is an arithmetic number, because the mean of its divisors is an integer number (118621356).

Almost surely, 2^2140023444 is an apocalyptic number.

It is an amenable number.

2140023444 is an abundant number, since it is smaller than the sum of its proper divisors (3553801644).

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

2140023444 is a wasteful number, since it uses less digits than its factorization.

2140023444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806984 (or 806982 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2140023444 is about 46260.3874173142. The cubic root of 2140023444 is about 1288.6634483373.

Adding to 2140023444 its reverse (4443200412), we get a palindrome (6583223856).

It can be divided in two parts, 21400 and 23444, that added together give a palindrome (44844).

The spelling of 2140023444 in words is "two billion, one hundred forty million, twenty-three thousand, four hundred forty-four".