2405521340 has 48 divisors (see below), whose sum is σ = 5087728800. Its totient is φ = 955352832.

The previous prime is 2405521303. The next prime is 2405521357. The reversal of 2405521340 is 431255042.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3017822 + ... + 3018618.

It is an arithmetic number, because the mean of its divisors is an integer number (105994350).

Almost surely, 2^2405521340 is an apocalyptic number.

2405521340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2405521340 is an abundant number, since it is smaller than the sum of its proper divisors (2682207460).

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

2405521340 is a wasteful number, since it uses less digits than its factorization.

2405521340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2405521340 is about 49046.1144230611. The cubic root of 2405521340 is about 1339.8918268660.

Adding to 2405521340 its reverse (431255042), we get a palindrome (2836776382).

The spelling of 2405521340 in words is "two billion, four hundred five million, five hundred twenty-one thousand, three hundred forty".