11252313728 has 32 divisors (see below), whose sum is σ = 22515528960. Its totient is φ = 5601357568.

The previous prime is 11252313697. The next prime is 11252313733. The reversal of 11252313728 is 82731325211.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×11252313728² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164576 + ... + 222687.

It is an arithmetic number, because the mean of its divisors is an integer number (703610280).

Almost surely, 2^11252313728 is an apocalyptic number.

It is an amenable number.

11252313728 is an abundant number, since it is smaller than the sum of its proper divisors (11263215232).

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

11252313728 is an equidigital number, since it uses as much as digits as its factorization.

11252313728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387504 (or 387492 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

Adding to 11252313728 its reverse (82731325211), we get a palindrome (93983638939).

The spelling of 11252313728 in words is "eleven billion, two hundred fifty-two million, three hundred thirteen thousand, seven hundred twenty-eight".