2840523440 has 40 divisors (see below), whose sum is σ = 6694699488. Its totient is φ = 1120642560.

The previous prime is 2840523409. The next prime is 2840523449. The reversal of 2840523440 is 443250482.

2840523440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 2840523397 and 2840523406.

It is not an unprimeable number, because it can be changed into a prime (2840523449) 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, 237356 + ... + 249035.

Almost surely, 2^2840523440 is an apocalyptic number.

2840523440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2840523440 is an abundant number, since it is smaller than the sum of its proper divisors (3854176048).

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

2840523440 is a wasteful number, since it uses less digits than its factorization.

2840523440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486477 (or 486471 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 2840523440 is about 53296.5612399149. The cubic root of 2840523440 is about 1416.2267477117.

The spelling of 2840523440 in words is "two billion, eight hundred forty million, five hundred twenty-three thousand, four hundred forty".