11228321440 has 48 divisors (see below), whose sum is σ = 30316470912. Its totient is φ = 3849709824.

The previous prime is 11228321437. The next prime is 11228321441. The reversal of 11228321440 is 4412382211.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 11228321399 and 11228321408.

It is not an unprimeable number, because it can be changed into a prime (11228321441) 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, 5011524 + ... + 5013763.

It is an arithmetic number, because the mean of its divisors is an integer number (631593144).

Almost surely, 2^11228321440 is an apocalyptic number.

11228321440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11228321440 is an abundant number, since it is smaller than the sum of its proper divisors (19088149472).

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

11228321440 is a wasteful number, since it uses less digits than its factorization.

11228321440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10025309 (or 10025301 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 11228321440 in words is "eleven billion, two hundred twenty-eight million, three hundred twenty-one thousand, four hundred forty".