2013023440 has 40 divisors (see below), whose sum is σ = 4831262208. Its totient is φ = 779233920.

The previous prime is 2013023413. The next prime is 2013023447. The reversal of 2013023440 is 443203102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013023447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403372 + ... + 408331.

Almost surely, 2^2013023440 is an apocalyptic number.

2013023440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2013023440 is an abundant number, since it is smaller than the sum of its proper divisors (2818238768).

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

2013023440 is a wasteful number, since it uses less digits than its factorization.

2013023440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811747 (or 811741 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2013023440 is about 44866.7297671671. The cubic root of 2013023440 is about 1262.6498863316.

Adding to 2013023440 its reverse (443203102), we get a palindrome (2456226542).

The spelling of 2013023440 in words is "two billion, thirteen million, twenty-three thousand, four hundred forty".