2400021312 has 56 divisors (see below), whose sum is σ = 6838529376. Its totient is φ = 738467328.

The previous prime is 2400021289. The next prime is 2400021361. The reversal of 2400021312 is 2131200042.

It is a junction number, because it is equal to n+sod(n) for n = 2400021291 and 2400021300.

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, 478278 + ... + 483269.

It is an arithmetic number, because the mean of its divisors is an integer number (122116596).

Almost surely, 2^2400021312 is an apocalyptic number.

It is an amenable number.

2400021312 is an abundant number, since it is smaller than the sum of its proper divisors (4438508064).

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

2400021312 is a wasteful number, since it uses less digits than its factorization.

2400021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961575 (or 961565 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2400021312 is about 48990.0123698698. The cubic root of 2400021312 is about 1338.8698631957.

Adding to 2400021312 its reverse (2131200042), we get a palindrome (4531221354).

The spelling of 2400021312 in words is "two billion, four hundred million, twenty-one thousand, three hundred twelve".