2305621240 has 32 divisors (see below), whose sum is σ = 5586698880. Its totient is φ = 851306112.

The previous prime is 2305621231. The next prime is 2305621321. The reversal of 2305621240 is 421265032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2216424 + ... + 2217463.

It is an arithmetic number, because the mean of its divisors is an integer number (174584340).

Almost surely, 2^2305621240 is an apocalyptic number.

2305621240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2305621240 is an abundant number, since it is smaller than the sum of its proper divisors (3281077640).

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

2305621240 is a wasteful number, since it uses less digits than its factorization.

2305621240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433911 (or 4433907 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2305621240 is about 48016.8849468601. The cubic root of 2305621240 is about 1321.0806195465.

Adding to 2305621240 its reverse (421265032), we get a palindrome (2726886272).

The spelling of 2305621240 in words is "two billion, three hundred five million, six hundred twenty-one thousand, two hundred forty".