2415443440 has 80 divisors (see below), whose sum is σ = 5886908928. Its totient is φ = 919939328.

The previous prime is 2415443431. The next prime is 2415443441. The reversal of 2415443440 is 443445142.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2415443441) 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, 414789 + ... + 420571.

Almost surely, 2^2415443440 is an apocalyptic number.

2415443440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2415443440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2943454464).

2415443440 is an abundant number, since it is smaller than the sum of its proper divisors (3471465488).

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

2415443440 is a wasteful number, since it uses less digits than its factorization.

2415443440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046 (or 6040 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 2415443440 is about 49147.1610573795. The cubic root of 2415443440 is about 1341.7315256036.

Adding to 2415443440 its reverse (443445142), we get a palindrome (2858888582).

The spelling of 2415443440 in words is "two billion, four hundred fifteen million, four hundred forty-three thousand, four hundred forty".